268 ANNUAL RECORD OF SCIENCE AND INDUSTRY. 



ations in portions of Nebraska, Utah, Colorado, New Mexico, 

 and Arizona. 



On the 7th of June, Dr. Rothrock, in charge of a natural- 

 history party, departed for his field of operations in New 

 Mexico and Arizona, accompauied by Mr. Henshaw as or- 

 nithologist, and one barometric observer ; the party being 

 charged with filling in gaps in the areas left vacant as to nat- 

 ural-history collections in previous years, also with certain 

 hypsometrical determinations. Their outward route was to 

 lead from Santa Fe to Fort Wingate, New Mexico ; thence to 

 Camp Apache, Arizona; thence via New Camp Grant to Camp 

 Bowie; thence to Camp Crittenden, the most southerly point; 

 thence returning via Camp Apache, Fort Tulerosa, and Fort 

 Craig to Santa Fe, which point was reached about the mid- 

 dle of No v e m b e r. 



Their results, as indicated by the reports, have been elab- 

 orate and exhaustive, numbering large collections, especially 

 in botany no less than 900 species of plants, of 15 speci- 

 mens each, having been secured ; and in ornithology a col- 

 lection of bird-skins over 1000 in number, besides general 

 collections in other branches of natural history. These, in 

 common with other parts of the collections made, were, upon 

 being received at Washington, distributed at once into the 

 hands of competent specialists for study, either through the 

 Smithsonian Institution or the office of the Survey. 



The main or receiving party of the astronomical parties 

 took station at the observatory constructed by the Survey in 

 1873 at Ogden,Utah, about July 1st, and besides connecting 

 directly with the United States Naval Observatory at Wash- 

 ington, with a view to a further check upon the determina- 

 tion of the meridian of the observatorv at Qgden, which is 

 assumed as the main meridian of the Survey, made further 

 observations for the determination of the latitude of that 

 point, and received signals sent by the party under Dr. F. 

 Kampf, at Las Vegas and Cimarron, New Mexico ; Sidney Bar- 

 racks, Julesburg, and North Platte Station, Nebraska. These 

 parties concluded their observations about November 1st; 

 the observatory having been in charge of Mr. J. H. Clark, with 

 one assistant. Dr. F. Kampf was provided with two assist- 

 ants for the greater part of the season, and carried on as 

 usual, in addition to the regular longitude and latitude ob- 



