26 The West American Scientist. 



this country, indexed and classified, and under each article the 

 names and addresses of manufacturers. (See advertisement.) 



A new philosophy, a radical's idea of health, happiness and 

 longevity. By L. P. McCarty, 1890. A lucid, common-sense 

 treatise, telling how to maintain health without medicine, how to 

 secure happiness without money, and how to attain to a long 

 Hie. It cannot fail to do any one good to read this little book, 

 which can be had in paper covers for 50 cents; flexible covers, 

 75 cents, of Carson & Co., 208 Post St., S. F., Cal., or at this 

 office. 



Artificial keys to the genera and species of mosses recognized 

 in Lesquereux and James' Manual of the Mosses of North Am- 

 erica. Trans. Wise. Acad Sci.; Arts and Letters, vol. VIII. 

 From the author, Charles R. Barnes, Prof, of botany, University 

 of Wisconsin,, Madison. Price, fifty cents. 



Black Beauty : his grooms and companions. The "Uncle 

 Tom's Cabin" of the Horse. By Miss Anna Sewell, George T. 

 Angell, 19 Milk St., Boston, Mass. It is a delight to read this 

 pleasant sketch, purporting to represent the experiences and feel- 

 ings of a high-bred horse. This autobiography of an English 

 horse is of deep interest and is proving full of iascination to old 

 and young, high and low. Over 100,000 copies have already 

 been sold in London, and it is expected to have a million circula- 

 tion in America— as it well deserves. No one will regret sending 

 twenty-five cents for a copy of this book, which contains 260 

 pages. 



On the Hymenoptera of Colorado. By Wm. H. Ashmead, 

 Colo. Biol. Assn., Bull. No. 1, 1890. 



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