THE OSPEEY. 



117 



coincident in time. (5) That in the case of 

 the Parrot, there ivas a very appreciable 

 microscopical and chemical dilfcrence in the 

 relative amounts of pigfments present in the 

 two extreme stages, g-reen and j'ellow, of the 

 same feather, as well as a structural differ- 

 ence. (6) The probability of modification in 

 the feather indirectly by gain of some con- 

 stituents from the fluid.s of the body, or di- 

 rectly from chemical change in the substance 

 of the living featlier, is strongly sug-gested. 



In conclusion, it maj" be well to state that 

 all my microscopical work was done with 

 Bonsh and Lamb instruments, 1-2, 1-6, and 1-S 

 inch objectives. 2 and 1 inch oculars: and with 

 slides mounted in Canada balsam, under fairly 

 strong, clear light. The instruments were ob- 



tained through the kindness of Prof. E. W. 

 Morse, of the Euss.y Institute, and Chas. E. 

 Claj-, Esq., of the Roxbury High School, I am 

 also indebted to ilrs. W. P. Holies, of Boston, 

 for the nse of her Parrot; to Mr. Nathaniel 

 French, of the High School, for use of the 

 laboratory there; and wish especially to ex- 

 press my obligations to Miss Edith F. Brain- 

 erd, of Dorchester, for her excellent work 

 upon the plate, which was prepared by her 

 from fresh specimens under my directions. 

 It represents, as already said, five stages of 

 the aptosochromatism of an individual feather 

 of Chrysotis levaillanti, each about twice 

 natural size. 



80 (ilendale (street. Dorchester, Mass., 

 January, 1899. 



CHARLES HALLOCK. 



By Elliott Coues. 



Charles HaJlock, A. M., the subject of this 

 sketch, while not strictly a scientist, has been 

 a member of one or more of the scientific 

 societies of Washington since their organiza- 

 tion, and has filled a unique and useful posi- 

 tion for fifty years as a close observer and 



CH.\RI,ES HALLdCK. 



discriminating collector in tlie tield of natural 

 history-. Prof. O. Brown (ioode, of the Na- 

 tional Museum, once wrote: "No man can help 

 us like Chas. Hallock." No geographical divi- 

 sion of North America, marginal or interme- 

 diate, from the subarctic regions of Alaska 



and Labrador to the Caribbean Seas, has es- 

 caped his attention; while his sketches of 

 travel which have appeared in the magazines 

 and leading journals of the United States and 

 Canada, together with the "Forest and 

 Stream," which he established in 1S73, and his 

 numerous books, have given him an en- 

 viable prominence among tourists, 

 sportsmen, and savans, not often 

 acipiired by specialists of his ilk. His 

 "Fishing Tourist," published by the 

 Harpers in 1873, was the record of 

 twenty-five years of wandering through 

 the wilderness areas of the United States 

 and British provinces, and as long ago as 

 187S, George Dawson, the eminent editor 

 of the Albany .JoTirnal, and himself an 

 angler of renown, wrote: "Charles Hal- 

 luck has written more and more wisely 

 Hum any of his contemporaries." That 

 was twenty-one years ago; and to-day we 

 do not detect any lack of vitality or 

 vivacity in his lucubrations. 



As an ichthyologist. Mr. Hallock led 

 the van up to the date of publication of 

 his "Sjjortsman's Gazetteer," a 900-page 

 volume, which appeared in 1877; that 

 ])ortion of it which treated of the edible 

 game fishes of America, their synonyms, 

 and classification, being in advance of all 

 other works, and was so quoted by Prof. 

 Theo. Gill, who assisted the author very 

 materially in his description of the Pa- 

 cific coast fishes therein enumerated. 



The Florida peninsula had early en- 

 gaged Mr. Halloek's attention, and 

 in 1874-5 he fitted out the Ober and 

 .\1 Fresco (Dr. C. 

 peditions to the 

 mid the west 

 his "I amp Life 

 peared in 1876. 

 Florida privately, and through the press and 

 ])ublic meetings, acknowledged to the author 

 his substantial services rendered to the State, 

 so little had been previously written of its 

 geogra])hy and resources. In the same way 

 Mr. Hallock received the thanks of Minnesota 



.1. Kenworthy) ex- 



Seminole country 



coast. and when 



in Florida" ap- 



the citizens of 



