200 



THE AMERICAN MONTHLY 



[Oct., 18S2. 



and Rev. Dr. Shepperd, Executive Com- 

 mittee. 



— We omitted to mention last month, 

 in our report of the meeting of the A. A. 

 A. S., that Prof. A. H. Tuttle read a pa- 

 per before the Section of Histology and 

 Microscopy on the epidermis of the mar- 

 sipo-branchs. This was an oversight 

 which we regret. 



— At the Montreal meeting Dr. Carl Sell- 

 er stated that, after considerable experienf^e 

 in grinding knives for cutting thin sections, 

 he had found that the bevel of the edge 

 should be the same on the two sides, and 

 he explained a device which enabled him 

 to ensure the true bevel without difficulty. 



NOTICES OF BOOKS. 



The Republic of Mexico in 1882 with Re- 

 vised and Corrected Map. By Lorenzo 

 Castro. New York : Thompson & 

 Moreau, Printers, No 51 & 53 Maiden 

 Lane, 1882. (8vo., pp. iv and 271.) 

 This is a very valuable publication, giv- 

 ing a vast amount of useful information 

 concerning the present condition of Mexi- 

 co, its resources and its productions. It be- 

 gins with an epitome of the early history 

 of Mexico, and gives an account of its 

 people, its antiquities, its construction, 

 and its form of government. The physi- 

 cal geography and the climate of Mexico 

 are treated at considerable length, and the 

 important mining and agricultural re- 

 sources enumerated, in which the author 

 finds promise of great future prosperity 

 and wealth to the State. The Republic 

 of Mexico is divided into 27 States, 1 Ter- 

 ritory and 1 Federal District. Each of 

 these is described. 



A history of mining and a catalogue of 

 the mining districts is given, also a num- 

 ber of itineraries for the benefit of travel- 

 lers visiting the country either for busi- 

 ness or pleasure. A large and well exe- 

 cuted map, 35 by 49 inches, is appended. 



Annual Report of the Operations of the 

 United States Life-saving Service for 

 the fiscal year ending June 30th, 1881. 

 Washington : Government Printing Of- 

 fice, 1881. (Pp. 438.) 

 The extent and importance of the Life- 

 saving Service is becoming better appre- 

 ciated by the public every year. This re- 

 port enumerates 149 stations along the 

 United States sea-board, of which 6 are on 

 the Pacific coast, besides 34 others on the 



shores of the Great Lakes. During the 

 year ending June 30th, 1881, there were 

 reported 250 disasters to vessels, having 

 on board 1,878 persons, and only 24 of 

 these were lost, while 66 vessels became 

 total wrecks. 



The methods of saving life employed 

 at the stations are vividly set forth in 

 the naratives given of the shipwrecks 

 involving loss of life. The service has 

 attained a high degree of efficiency, and 

 saves not only hundreds of lives but also 

 miLions of dollars to commerce every 

 year. 



Exchanges. 



[Exchanges are inserted in this column without 

 charge. They will be strictly limited to mounted 

 objects, and material for mounting.] 



Wanted — To exchange, good slides correctly named, 

 or material for mounting for same. 



F. C. SMITH, Bridgeport, Conn. 



Wanted, material containing Pleurosigma angula- 

 tum, Nitzschia sigmoidia, Frustulia Saxonica and 

 Amphipleura pellucida. Mounted diatoms or material 

 in exchange. 



T. CHRISTIAN, 

 108 Virginia, St., Richmond, Va. 



Wanted— Diatomaceous material from New Hamp- 

 shire con\.^\xi\r\% Amphipleura Lindheimeri^m CK- 

 change for materials from North of Ireland. 



WILLIAM A. FIRTH, 

 Whiterock, Belfast, Ireland. 



Striatella unipuncta, Rhabdonema Adriaticutn^ 

 and other first-class crude material, to exchange for 

 named diatoms and first-class material — prepared and 

 particularly foreign material preferred. 



M. A. BOOTH, Longmeadow, Mass. 



Mounted crystals for the poloriscope, diatoms (a 

 fine collection), fresh-water algae foraminifera, in ex- 

 change for other well-mounted objectii. Send speci- 

 mens and full value will be returned. 



R. HITCHCOCK, 53 Maiden Lane, New York. 



Well-mounted sections of Rat's tongue, Rabbit's 

 eye and Cat's muscle, for other well-mounted objects. 

 F. B. CARTER, 

 519 Gates Ave., Brooklyn, N. Y. 



On receipt of a well-mounted slide, I will send a 

 slide of crystals (for the polarizer), of anyof the rare 

 vegetable products which I may have ; will send list 

 of same on receipt of postal request. 



J. KETCHUM, Jr., 

 P. O. Box 877, New York City. 



Wanted. — Animal parasites, Ixodes, Acari, etc., 

 either mounted or unmounted. W. A. HY.SLOP, 

 22 Palmerston Place, Edinburg, Scotland. 



Unmounted objects, Foraminifera, Spicules, Plant- 

 hairs, Zoophytes, etc., in exchange for other objects, 

 mounted or unmounted. 



E. PINCKNEY, Dixon, 111. 



