240 



THE AMEBIC AN MONTHLY. 



[December. 



recognizable slimy clots at a touch of the 

 fingers. 



I have found the best plan for securing 

 card specimens to be this : — to take with 

 me, when collecting, paper, or card, on 

 which to mount my specimens, with cloth 

 driers, and a book in which to place them ; 

 and to do the whole work while out in the 

 field, using the brook or spring as my 

 mountingbowl and its grassy sides as my 

 draining table. Nature must, however, 

 lend her approval to make even this plan 

 successful, for a contrary wind will blow 

 specimens off the paper faster than they 

 can be supplied, and a calm day is a 

 necessity. Granted these preliminaries to 

 success, the specimens thus obtained may 

 be arranged like any herbarium, or, as in 

 the volume I exhibit, in a bound book, 

 slipped into each page, or each alternate 

 page, or gummed on, and protected from 

 rubbing by tissue papers inserted. In the 

 collection contained in the volume I ex- 

 hibit I have sought to present a specimen 

 of each of the larger algae I have found 

 within the District, arranged in order of a 

 classification, from the lowest to the 

 highest in structure, with printed labels 

 giving date of collection and place, as 

 well as stating the name and the feature 

 illustrated. It will be remembered that 

 many of the specimens here presented 

 make no pretension to beauty, and that 

 the credentials on which their admittance 

 to this collection depends are strictly the 

 credentials of a representative body, not 

 of personal gifts or graces. 



III. Distribution. — In answer to the 

 question where to go to find specimens, I 

 would say, visit every pool, spring, ditch, 

 and brook. The pools on the Carberry 

 meadows I have found most productive of 

 any pools, but of their individual pecu- 

 liarities I have not time at present to speak. 



IV. Species Represented. — The next 

 question natural after ' Where shall I go ?' 

 is, ' What shall I find ? ' and it is princi- 

 pally to answer that inquiry and to give 

 some idea to those who have not studied 

 our algae, but who may be induced to pay 

 some attention to this fascinating branch 

 of science, that I bring my voluine of the 

 Larger Algae of the District to exhibit 

 card specimens, of which I will speak in 

 detail, beginning with the highest and 

 descending. The speaker then showed 

 the volume referred to, consisting of card 

 specimens of algse, exquisitely mounted, 

 and described each. Among the algs 

 shown were specimens of Batrachosper- 

 mum, Draparnaedia, Cha^tophora, Tetra- 

 spora, Spirogyra, Hydrodiction, Conferva, 



Didymoprium, Chara, CEdogonium, Os- 

 cillaria, Lyngbya, Vaucheria, Cladophora, 

 Stigeoclonium, and Zygnema. Accom- 

 panying each was a microscopic specimen 

 for the purpose of showing the intimate 

 structure. The speaker also showed a 

 mechanical stage, by Bausch & Lomb, 

 which he had had ruled into divisions 

 of y^^ inch, and by a simple system of 

 numbering from one to ten in one direc- 

 tion, and ten to one hundred in the other, 

 he was enabled to locate any object de- 

 sired. He had found it more useful than 

 the Maltwood finder. 



Prof. Seaman showed a new Thoma 

 microtome lately purchased and explained 

 its working. 



E. A. Balloch, Rec. Seer. 



NOTICES OF BOOKS. 



Cocaine in Hay Fever: — A Lecture Deliv 

 eredatthe Chicago Medical College. By 

 Seth S. Bishop, M. D. Reprinted from 

 the Journal of the American Medical 

 Associatio7i, Feb. 6, 1886. Chicago, 1886. 

 (PP- 13)- 



Operations on the Drum-head for Im- 

 paired Hearing ; with Fourteen Cases. 

 Bv Seth ¥{. Bishop, M. D. Yromjotirfi. 

 Am. Med. Assoc, Aug. 28, 1886. Chi- 

 cago, '86. (pp. 13). 



Perma7ient Removal of Hair by Electroly- 

 sis ; with Cases. By Samuel E. Woody, 

 A. M., M. D., from American Practi- 

 . tioner and News, ]y. 24, '86. Louisville, 

 1886. (pp. 11). 



Louis Pasteur ; His Life and Labors. By 



his son-in-law. From the French, by 



Lady Claud Hamilton. New York : D. 



Appleton & Co., 1885. (pp. xliii, 300). 



This work will be likely to interest all 



students of the microscopic forms of life 



in relation to disease, both for the sake of 



the scientific information conveyed, but 



more especially on account of the great 



interest in the life and experiences of 



Pasteur himself. 



Exchanges. 



[Exchanges are inserted in this column without 

 charge. They will be strictly limited to mounted ob- 

 jects, and material for mounting.] 



Interesting mounts in exchange for meat containing 

 trichina. H. M. WHELPLEY, 



St. Louis, Mo. 



