Vol. IX] TAYLOR— COOPER'S MAMMALS 79 



Survey portions of the State not before sufficiently explored. 

 Mention is made also that he did "a large amount of gratu- 

 itous work, in the way of elaborating the materials in various 

 branches of the zoology of the Pacific Slope . ..." In 

 September, 1865, Dr. Cooper was at Tulare Lake (Cooper, 

 1870c, p. 107) ; and specimens collected by him in October 

 and November, 1865, at Drum Barracks^" and Wilmington 

 have been examined and included among the "Specimens 

 Examined," postea. 



It is of interest" to note that while Cooper was stationed 

 in the vicinity of San Pedro he entertained a notable visitor 

 in the person of Elliott Coues, who travelled overland from 

 Fort Whipple, Arizona, to the coast during the early fall of 

 1865 (Coues, 1866, pp. 259-275). Coues's opinion of Cooper 

 is indicated in the following reference (1. c, p. 260). "Fort 

 Mojave, on the Colorado River, in about lat. 35°, is interest- 

 ing to us as the locality whence were lately procured two rare 

 and curious new birds by Dr. J. G. Cooper, so well known as 

 an indefatigable and accurate naturalist . . . ." On 

 page 269 of the same contribution Coues writes of enjoying 

 Cooper's hospitality during his stay at San Pedro, referring 

 to Cooper's conversation as ". . . an encyclopedia of in- 

 teresting biographies of the birds of the Pacific Coast." 



Dr. Cooper was married January 9, 1866, to Miss Rosa M. 

 Wells, in Oakland, California. Soon thereafter we find him 

 at Santa Cruz (Cooper, 1870, p. 107), where he may have 

 resided until 1871. It will be remembered that on this date 

 or soon thereafter he moved to Ventura County, locating at 

 Saticoy; and that in 1875 he returned to Hay ward, in the San 

 Francisco Bay region. 



The examination of specimens extant shows that in the 

 spring of 1866 Dr. Cooper did some collecting at Santa Cruz; 

 that he made a trip to the foothills of Placer County, as well 

 as to the high Sierras in the vicinity of Lake Tahoe, during 



^^ Drum Barracks, Los Angeles County, California, about three miles northeast of 

 Wilmington (see Whitney's map of California and Nevada, State Geological Survey 

 of California, 2nd ed., 1874). 



" It seems not improbable that the migration records for Santa Cruz published 

 by Dr. Cooper in the Proceedings of the U. S. National Museum (1880, pp. 245-250) 

 should be dated 1866 rather than 1865; for he was, for at least a part of that year, 

 fully occupied elsewhere. If the records are bona fide personal observations made by 

 Cooper at Santa Cruz in 1865, he must have been stationed there for a considerable 

 period of time, the months from March to July in the spring, and September and 

 October in the fall, being represented. 



