118 THE AMERICAN MONTHLY. [June. 



Brook's Zoology, but not m style. While some object to the size and weight of this 

 for a manual of its sort, we cannot but think that durability is a consideration, and that 

 for the amount of matter the size is not excessive. 



The illustrations, of which there are an abundance, are excellent for their clearness, 

 and, at the same time, for their avoidance of too great abstractness. While sufficiently 

 diagrammatic for clearness, they do not lose the effect of reality, and they resemble 

 good sections of which they are pictures. For the help of any who desire to hunt up 

 for themselves the original articles upon the subjects of the various lessons, a list of 

 references is appended to each lesson. The importance of this to the investigator can- 

 not be overestimated. — O. 



Elc7iietitary Microscopical Examinatio7i. By T. Charters W^hite, late President of the 

 Ouekett Club. 104 pp. London. Roper & Drowley. 

 We take from a review in Natnre a brief notice of the work, not having yet seen it. 

 The author has aimed at leading ' the possessor of his first microscope into the smooth 

 path of progress by pointing out the simplest and most elementary methods of obser- 

 vation, and, after so far clearing the way, leading him gradually to the higher branches 

 of microscopical manipulation.' The book is pronounced by its reviewer to be one 

 which, in spite of some inaccuracies, far excels in merit many and more pretentious 

 works on the subject. — O. 



Book Chat. — To one who wishes an index of current literature we should recommend 

 Book Chat, by Brentano, 5 Union Square, N. Y., which has, during the first 3 months 

 of 1888, indexed 524 new American and English works, reviewed 124 new books, in- 

 dexed 3627 magazine articles contained in 799 periodicals, and noted 145 French, 115 

 German, 34 Spanish, and 52 Italian books. 



Exchanges. 



[Exchanges are inserted in this column without charge. They will be .strictly limited to mounted objects, and 

 material for mounting.] 



OFFERED. — Diatomaceous earth from Thibet, various localities (12,000 feet); also, material and slides of 

 diatoms from Scottish Highlands, and continental foraminiferse. WANTED. — Slides of American diatoms, 

 insects or botany. W. D. STEWART, 2 Gilmore Terrace, Edinburgh, Scotland. 



OFFERED. — Sections of vegetable ivory and slides of crystalized maple sugar. Good mounts taken in 

 exchange. WM. LIGHTON, 106 Fifth Avenue, Leavenworth, Kansas. 



WANTED. — Parasites and books on Parasites and other micro, subjects. Will give Anatomical, Pathologi- 

 cal Botanical, Micro-fungi, Zoophytes, Polycistinae, Foraminifera, Parasites, and other slides in return. 



FRED. LEE CARTER, Gosforth, near Newcastle-on-Tyne, England. 

 Wanted, Diatomaceous earth from Megillanes, Bolivia, South America. Can give in exchange either Dia- 

 tomaceous earth from New Zealand or cash. E. MICHALEK, 



L Fleischemarkt, No. i, Vienna, Austria. 

 Mounted sections of Foetal Lung (5 months), sections across entire lobe, Trjji^ in. thick, beautifully stained, in 

 exchange for first-class pathological slides. W. C. BORDEN, M. D., U. S. A., 



Fort Douglas, Utah. 

 Wanted earths, recent diatoms, and miscellaneous objects for mounting. Only first-class material offered or 

 desired. MARY A. BOOTH, Longmeadow, Mass. 



Fossil Diatomaceous deposits (marine) wanted from Bermuda, Virginia, Maryland, California, etc. 



L ELLIOTT, Ardwyn Villa, Aberystwith, Wales, England. 

 Labels for slides. EUGENE PINCKNEV, Dixon, 111. 



Correspondence relative to exchange in microscopical material or prepared mounts. 



HENRY L. OSBORN, Hamline, Minn. 



Notices.— All communications for publication should be addressed to Henry Leslie Osborn, Hamline 

 University, Hamline, Minn. 



Subscriptions, and all matters of business, should be addressed to the Manager, Chas. W. Smiley, P. O. 

 Box 630, Washington, D. C. 



Subscription price $1.00 PER YEAR strictly in advance. All subscriptions should end with the De- 

 cember number. A pink wrapper indicates that the subscription has expired. A date on the wrapper in- 

 dicates the month to which payment has been made. 



Orders for slides advertised by A. J. Doherty in the Journals from January to April, 1887, may be sent 

 through the Business Manager, P O. Box 630, Washington, D. C. 



A few copies of Leidy's Fresh -Water Rhizopods, of North America, can still be had at $5.00 per copy.— P 

 O. Box 630, Washington, D. C. 



Remittances should be made by postal notes, money orders, or by money sent in registered letters. Drafts 

 should be made payable in Washington, New York, Boston, or Philadelphia, to the order of the Manager. 



The first volume, 1880, is entirely out of print. The succeeding volumes will be sent by the publisher for 

 the following prices which are net :— Vol. \l (1881) complete, $1.50; Vol. HI (18S2), out of print ; Vol. IV 

 (1883) complete, $1.^0 ; Vol. V (1884) complete, ^1.50 ; Vol. V (1884), Nos. 2-12, gi.oo ; Vol. VI (1885), $1.50 ; 

 Vol. VII (1886), Si. 00; Vol. VIII (1887), $1.00. As calls for Volumes I and III sometimes occur, those persons 

 having copies to dispose of would do well tc inform us, and to state their price.--. 



