20 



THE AMERICAN MONTHLY. 



[Jan, 1883. 



Acephalis. Etudes locales et Compara- 

 tives. Extraits du systeme silurien du 

 centre de la Boheme. Vol. VI. Ace- 

 .phalis. 10 Plancles. Par Joachim 

 Barrande. Chez I'auteur et editeur : 

 Prague and Paris, 1881. (pp. 536.) 



This'is the latest of a large number of 

 valuable works by the same author, de- 

 scribing and illustrating fossil remains of 

 shells in the rocks of Bohemia. These 

 works are all especially valuable for the 

 excellence of the illustrations, many of 

 which are not to be surpassed. 



Nervous Force: Its Origin and Physi- 

 ology. By W. C. Barrett, M.D., L. D. S., 

 Buffalo, N. Y. Read before the Ameri- 

 can Dental Association at its twenty- 

 second annual meeting, held in Cin- 

 cinnati, Aug. 1-5, 1882. (Pamphlet, 

 pp. 16.) 



New Cojtiinercial Plants and Drugs. No. 

 6. Part I. Fibres : Their Botanical 

 Sources ; The Methods of Examining 

 them under the Microscope, and their 

 Treatment by the Ekman Process. Il- 

 lustrated with six colored plates. Part 

 II. New Plants and Drugs: Their 

 Cultivation and Uses. By Thomas 

 Christy, F. L. S., with the kind assist- 

 ance of M. Vetillart, of Paris. Lon- 

 don : Christy & Co. 1882. (Pamphlet, 

 pp. 116. Price 7.S. 6d.) 



This is a very useful publication for 

 those who are interested in the applica- 

 tion of fibres to the manufacture of paper 

 or textile fabrics. It contains much in- 

 formation of a thoroughly practical kind, 

 and the illustrations are good. 



Biological Atlas. A Guide to the Practi- 

 cal Study of Plants and Animals, 

 Adapted to the Requirements of the 

 London University, Science and Art 

 Department, and for use in Schools 

 and Colleges, with accompanying text, 

 containing arrangement and explana- 

 tion, equivalent terms, glossary, and 

 classification. Four hundred and twen- 

 ty-three colored figures and diagrams. 

 By D. M'Alpine, F. C. S., and'A. N. 

 M'Alpine, B. Sc. {Honours). Lond. 

 Edinburgh and London : W. & A. K. 

 Johnston. 1880. 



In attempting to give a suitable notice 

 of this excellent Atlas, we can do no bet- 

 ter than to quote a few lines from the 

 Preface : "It is now generally recognized 

 that a certain acquaintance with actual 

 specimens is necessary for the proper un- 



derstanding of plants and animals. By 

 the practical study of representative forms, 

 exemplifying the leading modifications of 

 plant and animal life, the student obtains 

 a basis of distinctly observed fact with 

 which to compare other forms, and round 

 which to cluster the information derived 

 from books. 



"The LIniversity of London has given 

 practical shape to this idea by selecting a 

 series of common types, which ' each 

 candidate must be prepared to examine 

 microscopically, to dissect and to de- 

 scribe.' , 



" In this Atlas, which is intended to 

 serve as a guide to, and not as a substi- 

 tute for, practical work, drawings are 

 given of the various points of importance 

 exemplified by each of these types to en- 

 able the student to make out the points 

 for himself on the actual specimens." 



It is no detriment to a work of this 

 kind that the figures are, to a certain ex- 

 tent, diagrammatic. They represent the 

 structures described very clearly, and 

 must prove of great use to the student in 

 dissectino;. 



Exchanges. 



Having lost my List of Exchange indebtedness, I 

 would be glad if those to whom I owe slides would send 

 me a memoranda of same, and oblige J. Ketchum, Box 

 877, New York City. 



For Ex'CHANGE. — Mounted or unmounted, the beau. 

 tiful seeds of the insectivorous plant, Drosera longifolia- 

 Rev. E. A. Perry, Palmer, Mass. 



Marine Algae and Diatomaceous earth in exchange 

 for Histoloiiical and Pathological slides, or minerals. 

 R. Cauch, M.D., Carpenteria, Cal. 



Wanted. — Well-mounted slides of Coal and Coal 

 products in exchange for slides or material for mount- 

 ing. Address, J. C. Lathrop, Bridgeport, Conn. 



For bladders of Utricularia (Insectivorous Plant), 

 send stamped envelope to Allen Y. Moore, M.D., 53 

 Prospect Street, Cleveland, O. 



Sections of Frog's tongue, Cat's tongue (polaris- 

 cope) and Skin of Index finger, for other well-mounted 

 objects. F. B. Carter, 519 6ates Av., Brooklyn, N. Y. 



Slides of arranged diatoms, also of selected diatoms, 

 to exchange for cleaned diatomaceous deposits. Now 

 on hand, slides of Aulacodiscus Crux, E. ; Rhabdone- 

 vta Myrijicuin ; Aulacodiscus Orioiialis ; Campylon- 

 eis Grevillei ; Heliopelta Selligticrii ; Craspedodiscus 

 elegans ; Cliviacosphenia Moiiiligera. H. P. Mal- 

 lory, Utica, Oneida County, N. Y. 



First-class slides in exchange for unmounted Animal 

 Parasites, a liberal exchange given for quantities. 

 John Walker, 810 12th Av., S. Minneapolis, Minn. 



