A Correction: An Annotated List of the Birds of Mesa County, Colorado - A. H. Felger (The Condor, 1909)

An Annotated List of the Birds of Boulder County, Colorado Junius Henderson - Robert B. Rockwell (The Condor, 1909)

An Annotated List of the Birds of Mesa County, Colorado - Robert B. Rockwell (The Condor, 1908)

The Colorado River Closure - W. D. H. Washington (Scientific American, 1907)

The vagaries of the Colorado river - Jacques W. Redway (Scottish Geographical Magazine, 1907)

Some gold and tungsten deposits of Boulder County, Colorado - Waldemar Lindgren (Economic Geology, 1907)
material.It is in good demand at prices up to $x2 per unit of tungsten-trioxide, making 70 per cent.ore worth $840 per ton.The following paragraphs describe some of these gold and tungsten deposits in the southwestern part of the county, in the vicinity of Eldora and Nederland, from data obtained during a short visit to the county in •9o6.The mineral deposits of Gilpin County have been briefly described by G. H. Garrey in Bulletin No. 285, pp.35-40.The gold and silver deposits of Clear Creek County have been described by Messrs. Spurr and Garrey in Bulletin No. 260, U.S. Geological Survey, pp.99-t2o, and a more complete report is now in press.On the other hand, very little has been published in the way of a geological description of the Boulder County mines.

Geology and underground waters of the Arkansas Valley in eastern Colorado, - Nelson Horatio Darton (Govt. Print. Off. eBooks, 1906)

The Uncompahgre Valley and the Gunnison Tunnel - Barton W. Marsh (Bulletin of the American Geographical Society, 1906)

The Doughty Springs, a group of radium-bearing springs, Delta County, Colorado - W. P. Headden (American Journal of Science, 1905)

The Blue Jay and Other Eastern Birds at Wray, Yuma County, Colorado - Horace G. Smith (The Auk, 1905)

The Romance of the Colorado River - Frederick S. Dellenbaugh (The Geographical Journal, 1903)

Some Remarks on Beginners' Latin Books with Special Reference to "The First Year of Latin" of Gunnison and Harley - Wilfrid Lay (The New York Latin Leaflet, 1903)

The Rocky Mountain Screech Owl in Larimer County, Colorado - W. L. Burnett (The Condor, 1903)

The Dinosaur Beds of the Grand River Valley of Colorado - Elmer S. Briggs; Oliver Cummings Farrington (Scientific American, 1902)

Bees in Colorado, a souvenir of the Denver meeting. September 3-5, 1902 - National Bee-keepers' Association. (1902)

The Franceville (El Paso County, Colorado) Meteorite - H. L. Preston (The Journal of Geology, 1902)

Artists in Oklahoma - - Bess England (1900)
A later culture knowa as Che Ozark To;}-Layer Culture (Illinois River area) possessed the bow ond crrov;» a variety of hotiQ and etone iciplemsnts, end v?sre makers of crude pottery.Anothsr culture flourished about 1200 A.D. In the Arkansas River Valley (Bradens Bottoms) in northeastern Le Flore county, near the village of Spiro.This culture had built earth moands over a large section of eastern Oklahoma, The best knov/n of thess eiounds is the greftt Temple Mound » n f'vsaerary earth structure.The sound cv^asured 262 feet In length, 106 feet In width, srsd 39 feet at the highest point.In the winter of 1933-1934, Dr. Carl Guthe , chnl can of the Katlonal llssesrcb Council Conralttea on State Archaeological Surveys,

The Grand Canon of the Colorado - Ralph S. Tarr (Scientific American, 1899)

A preliminary list of the Hemiptera of Colorado - C. P. Gillette; Colorado Agricultural Experiment Station; Carl F. Baker (Bulletin - Colorado Agricultural Experiment Station, 1895)
of new species here presented, although large, must be small compared with the forms yet unknown.

A List of the Birds of the wet Mountains, Huerfano County, Colorado - Willoughby P. Lowe (The Auk, 1894)

On alunite, from Red Mountain, Ouray County, Colorado - E. B. Hurlburt (American Journal of Science, 1894)

Catalogue of books, periodicals and pamphlets belonging to the Colorado Scientific Society - Colorado Scientific Society. (1893)

The Colorado formation and its invertebrate fauna - Timothy Stanton (Govt. Print. Off. eBooks, 1893)
From preface: The following review of one of the Upper Cretaceous faunas as developed in the interior region of the United States has grown out of the study of a collection of fossils found by me in Huerfano park and adjacent localities in southern Colorado. This collection, the greater part of which was obtained during the summer of 1890, proved to be especially interesting because it afforded data for the closer correlation of certain Cretaceous strata in Utah with those east of the mountains, besides adding a considerable number of new species to the fauna of the Colorado formation. Dr. C. A. White, under whose direction the field work was done, generously assigned these fossils to me for study with a view to publishing the results, and I am greatly indebted to his sympathetic aid in every phase of the work.

Reports on the damage by destructive locusts during the season of 1891 - United States. (1892)
Sir : I beg to submit herewith a report of my observations on the destructive lo- custs of the country during the current year, a work which has engaged, as you already know, the greater portion of my time during the past summer.While oc- cupied with these investigations portions of Colorado, Wyoming, the Dakotas, Min- nesota, Montana, Idaho, and Utah, along with the Eed River Valley of Manitoba, were visited by me.In addition to the regions personally examined, I am also ena- bled to include reports on other districts based upon reports and specimens obtained from friends who themselves had examined into the conditions of these affairs.It will not seem surprising, therefore, if the greater portion of my report relates to this particular group of insects.Since there have been a number of species of these destructive locusts concerned in the injuries inflicted in various portions of the country during the season, I have thought it best not only to mention all of these, but also to include such others as have been recorded as pests during former years, as well as those that are liable in the future to become injurious over local areas.this insect also occurred in destructive numbers in several limited lo- calities of southeastern Wyoming.At about the same time that I was investigating the northern border of the region occupied by the Long-winged Locust.Messrs. Snow and Popenoe, of Kansas, were studying it along its southern limits, where they found the insect in even much greater numbers than I did along its northern limits of abundance.As those gentlemen have made a much more thorough investigation of the pest than I have, and have written a rather full report of the results of their labors, the readers are referred to that paper if they desire to obtain the full particulars.The description, habits, distribution, and life-history of this species will be given farther on in this report, in connection with like particu- lars in reference to other species of these destructive insects which oc- cur in ^Nbrth America north of the Mexican boundary.

On halotrichite or feather alum, from Pitkin County, Colorado - E. H. S. Bailey (American Journal of Science, 1891)

Notes on the Flora of High Altitudes in Custer County, Colorado - T. D. A. Cockerell (Bulletin of the Torrey Botanical Club, 1891)

NOTES ON THE INSECT FAUNA OF HIGH ALTITUDES IN CUSTER COUNTY, COLORADO - T. D. A. Cockerell (The Canadian Entomologist, 1890)
The faunæ of high altitudes always posses a peculiar interest by virtue of the light they throw on problems of geographical distribution, and especially the distribution in ancient times of what is now a strictly Arctic and Alpine fauna. For this reason, the following lists of species, fragmentary as they are, may be of some value as a contribution to our knowledge of the Alpine fauna of Colorado, and for comparison with Arctic and Alpine faunæ in general.

PART II.—GRAND CAÑON OF THE COLORADO, BETWEEN THE KAIBAB AND COCANINI PLATEAUS - C. Hart Merriam (North American Fauna, 1890)

Geology of Colorado coal deposits / - Arthur Lakes (1889)
What is coal?" is a question that doubtless has often occurred to the thoughtful miner, who has worked perhaps all his life in coal mines, in England, Pennsylvania or Colorado, and is practically familiar with the substance in nearly all its known forms and with nearly every condition under which it is found.

Report of explorations in Colorado and Utah during the summer of 1889 : with an account of the fishes found in each of the river basins examined - David Starr Jordan (G.P.O. eBooks, 1889)

On ptilolite, a new mineral [from Jefferson County, Colorado] - L. G. Eakins; C. W. Cross (American Journal of Science, 1886)

Colorado State Forestry Association. Organized November 19th, 1884 - Colorado State Forestry Association. (1884)
7. It shall be the duty of th'e Presi- dent to preside at all meetings of the Board nd Association, call special jrne.}th?;gs

Fruit culture in Colorado : a manual of information - William E. Pabor (1883)
Fruit Culture. giving properties.

THE EXCAVATION OF THE GRAND CANON OF THE COLORADO RIVER - C. E. Dutton (Science, 1881)
GC skew is a measure of the strand asymmetry in the distribution of guanines and cytosines.GC skew favors R-loops, a type of three stranded nucleic acid structures that form upon annealing of an RNA strand to one strand of DNA, creating a persistent RNA:DNA hybrid.Previous studies show that GC skew is prevalent at thousands of human CpG island (CGI) promoters and transcription termination regions, which correspond to hotspots of R-loop formation.Here, we investigated the conservation of GC skew patterns in 60 sequenced chordates genomes.We report that GC skew is a conserved sequence characteristic of the CGI promoter class in vertebrates.Furthermore, we reveal that promoter GC skew peaks at the exon 1/ intron1 junction and that it is highly correlated with gene age and CGI promoter strength.Our data also show that GC skew is predictive of unmethylated CGI promoters in a range of vertebrate species and that it imparts significant DNA hypomethylation for promoters with intermediate CpG densities.Finally, we observed that terminal GC skew is conserved for a subset of vertebrate genes that tend to be located significantly closer to their downstream neighbors, consistent with a role for R-loop formation in transcription termination.

The Excavation of the Grand Cañon of the Colorado River - C. E. Dutton (Science, 1881)

Catalogue of plants collected in Nevada, Utah, Colorado, New Mexico, and Arizona, with descriptions of those not contained in Gray's Manual of the Northern U.S., and vol. V, Geological Exploration of the Fortieth Parallel - Joseph T. Rothrock (1878)
ANEMONE NARCISSIFLORA, L.-Six inches to a foot high, from a fibrous *Signs used: The degree (°) indicates feet.The minute (') indicates inches.The second ("') indicates lines, i. e. 4; of an inch.The hyphen means, to, i. e. 6-12' is 6 to 12 inches.The figures in parentheses are numbers under which the specimens were distributed.50taken so far north.(217.)RanuncuLus CymBauariA, Pursh-In Colorado grows everywhere in low moist ground, evincing, however, a marked choice for alkaline soils, but still flourishing in the freshest of snow water; altitude, 5,000 to 10,000 feet.From Saguache, in the San Luis Valley, we have a form with an erect, stout scape, bearing three or four flowers, having thicker and larger leaves, and manifesting little or no tendency to produce stolons.At Santa Fé, N. Mex., I collected it ( 10) at what I presume is the CATALOGUE. 57identical location from which Fendler obtained his plant, published by Dr.Gray in Pl.Fendl.p. 4, as 2. tridentatus, WH.B. K., and this I take to be the same form as that above alluded to from San Luis Valley.In addition to the difference noted by Dr. Gray in Pl.Fendl., I find the beaks of the achenia are in my specimens more tapering than in typical &.

Annual report upon explorations and surveys in the department of the Missouri - E. H. Ruffner; Herman Strecker (1878)
on the staff of the general commanding the Department of the Missouri, reports that but little progress has been made during the past year in the preparation of maps, or in the examination and survey of new country. Wantof means and small number of troops in the department available for marches or scouts are assigned as the reasons. The total mileage of journals of scouts and marches is given at 7,214, and an additional 2,030 miles for the reconnaissance in Southwest Colorado conducted by Lieut. C. A. H.

Mining in Boulder County, Colorado - F. L. Vinton (Scientific American, 1878)

The flora of southwestern Colorado / by T.S. Brandegee. - T. S. Brandegee (1876)
Attached to the division of the San Juan as assistant topographer, as much time as possible was given to the botany of the country through which our work obliged us to pass. Under such circumstances, it was impossible to make a complete botanical collection of the district given to our division ; therefore no plants were gathered excepting such as seemed to be additions to the flora

Report of the exploring expedition from Santa Fé, New Mexico, to the junction of the Grand and Green rivers of the great Colorado of the West, in 1859 - F. B. Meek; J. N. Macomb; J. S. Newberry; United States. (Govt. Print. Off. eBooks, 1876)
On the 15th September, IS.")!), we forded the San Juan, opposite Canon Largo, with no little danger, the strong current and deep water sweeping down some of the mules, which were recovered with difficulty.We were fortunate in passing through Cation Largo just after heavy rains, as 1 learned afterward that the command of Major Simon- son, which passed through the canon in July, had suffered much for the want of water.There is one fine spring in the canon, about thirty-five miles from San Juan, but no other of the Nacimiento Mountain and came to the old pueblo of Jemez, about fifty-six miles to the west by south from Santa Ft'.The route has been passed over by <J J wagons from Santa.Fe to a point, a short distance to the westward of ,Iemex>, and also from Santa Fe to the upper valley of the (,'liama, a short distance above Abiquiu, but on the remainder of the route passed over by my party there is no evidence of a wagon having-ever been seen, and a suitable road for wagons could only be made al a heavy cost for construction, and it would doubtless meet with much opposition on the part, of the Navajos and Utahs, whose country it would pass through.During the expedition my time was taken up with the astronomical observations requisite for laying down the route.In these observations 1 was assisted by Mr. F. I'.Fisher, who noted the; time and kept the record for me with accuracy and neatness.Mr. Fisher also carried a barometer throughout the march.All computations required for the astronomical observations were necessarily made by myself.Mr. C. H. Dimmock made an excellent sketch of the route, which he has drawn in one large map upon a, scale of half an inch to the mile.This map I have tested by the results of my astronomical observations and computations with very great satisfaction.Messrs. Dorsey and Vail carried barometers and thermometers, and kept daily records of the indications of those instruments, chiefly from the readings of Mr. Vail.Mr. Dorsey also assisted the geologist in making some of the collections of natural history specimens.

A new meteoric iron, e Colorado meteoritesfrom Russel Gulch, Gilpin County, near Central City, Colorado Territory - John Ward Smith (American Journal of Science, 1866)

The use of models as visual stimuli in insect behavior studies - J. S. Lewbin

Morphological variation in Castilleja - J. E. Hooker

Effects of sewage effluent discharge on aquatic invertebrate diversity and abundance in the Slate River, Colorado - T. Wangchuk; F. C. Scales

A comparative study of grazing effects in sagebrush lands - G. Merrill

Effects of nutrient addition on flower morphology and nectar production in Ipomopsis aggregata - C. D. Warner

The affects [sic] of footpaths on Coleoptera community composition alpine meadow habitat - S. Windhager

The cost of alarm calling in marmots (Marmota flaviventris) - S. Geer

So tiny, so sweet, so mean: every day they wage a vicious food fight - R. Conniff (Reader's Digest)

The function of alarm communication in yellow-bellied marmots (Marmota flaviventris) - J. Steinmetz

Rufous hummingbirds: feeding requirements & general management - J. Crayton

Amphibian populations surrounding the Rocky Mountain Biological Laboratory: risk assessment and management strategies - B. L. Morrison

The natural history and conservation status of Nicrophorus americanus and Nicrophorus investigator - E. Powers