264 THE AMEKICAN MONTHLY. [November. 



has a word for those who sneer at the limited "practical" results of 

 bacteriological studies. The whole essay is conservatively progressive. 



The article on Histology is by Dr. Manton, of Detroit. Some fine 

 plates are reproduced from Mertsching's Histology of the Hair and 

 from PoljakofTs " New Fat-forming Medium"; also three excellent 

 drawings from Kultschitzky's researches upon the smooth muscular 

 fibres in the mucosa of small intestine. 



The chief defect in the Annual, viz., the disjointed character of the 

 various articles, is hardly avoidable in a compilation from so many 

 sources, the reference list containing the names of 1234 periodicals, 

 pamphlets, monographs, etc. The triple index is, by itself, an im- 

 mense labor, occupying 101 pages of the fifth volume. 



Catalogue of Microscopes and Accessories. By James W. Queen & 

 Co., Philadelphia, 8°, pp. 10S. 

 This is the seventy-first edition of Catalogue B, and is well illustrated. 

 The most important features are the additional kinds of Acme micro- 

 scopes. There appear also many accessories of late origin, together 

 with cuts of slides, unmounted objects, books, etc. It is worth a care- 

 ful perusal. 



SUBSCRIBERS' NOTICES. 



[These notices will be given six insertions in this column at 25 cents per line or fraction thereof. 

 FOR EXCHANGE.— Slides of selected diatoms. D. B. WARD, Poughkeepsie, N. Y. 



WANTED. — Unmounted microscopical material, also micrographic dictionary. Will exchange or 

 buy. CHARLES VON EIFF, 124 Clinton Place, New York City. 



WANTED.— A clean copy of Rev. William Smith's British Diatoms, and Schmidt's Atlas of the 

 Diatomacese. JAMES B. SHEARER, Bay City, Mich. 



OFFERED.— Diatomaceous Earth from Unah (Desert) for Histological Mounts. 



PROF. ORSON HOWARD, Salt Lake City, Utah. 



CORRESPON DENCE invited with a view to the exchange of either mounted or unmounted Oribatida 

 (British) for American -species. E. BOSTOCK, Stone, Staffordshire. 



TO EXCHANGE. — Native gold, silver, copper, lead, zinc, and other beautiful cabinet specimens, 

 polished ornaments and sections of p: trifled wood — Chalcedony — and native turquoise, agate, amethyst, 

 rubies, etc.; also Indian ornaments, curios, arrows, blankets, pottery, etc.; pelts of wild animals, species 

 of native cactus, and a good second-hand " Burt's Solar Compass " complete. Any or all of the above 

 are offered in exchange for new, or good second-hand, objectives, condensers, polarizers, stand, or other 

 microscopical apparatus.' W. N. SHERMAN, M. D., Kingman, Arizona. 



OFFERED. — Zeiss' New Catalogue (in German) forwarded for 10 cents in stamps. 



F. J. EMMERICH & SONS, 43 Barclay St., New York City. 



WANTED. — Any works on Microscopy not already in my Library. 



H. M. WHELPLEY, F. R. M. S., St. Louis, Mo. 



WANTED. — (In excnange for slides.) " Microscopical Bulletin," Vol. I. No. 5, August, 1884. 



M. S. WIARD, New Britain, Conn. 



Labels in exchange for slides. EUGENE PINCKNEY, Dixon, 111. 



First-class Histological Slides for other good mounts ; Histological and Pathological material cut on 

 shares. S. G. SHANKS, M. D., 547 Clinton Ave., Albany, N. Y. 



OFFERED.— Griffith & Henfry Micrographic Dictionary to be sold ; also Hoggs Microscope. 



J. P. WINTINGHAM, 36 Pine St., N. Y. 



WANTED. — A clean copy of Wolle's Fresh- Water Algae of the United States (2 vols.) ; also good 

 second-hand Grunow Camera-Lucida, and a selt-centering Turn-table. 



JOS. P. THOMPSON, P. O. Box 1383, Portland, Me. 



