108 THE AMERICAN NATURALIST. (Vor. XXXIX. 
Bacteriology” has been issued from the Macmillan press, and, 
gives a most serviceable foundation for a year's work. 
An interesting article on invisible micro-organisms, by Dorset, is 
reprinted from the Zwentieth Annual Report of the Bureau of Animal 
Industry, U. S. Department of Agriculture. 
Volume 1 of Ward's “Trees: a Handbook of Forest Botany for 
the Woodlands and the Laboratory" (Cambridge, the University 
Press, 1904) deals with buds and twigs, and constitutes one of the 
best of the winter manuals yet published. In the second part of the 
volume, keys, figures, and descriptions facilitate the determination of 
British species. " 
An annotated account of trees and shrubs tested in Manitoba and 
the Northwest Territories, by Saunders, forms Bulletin No. 47 of the 
Central Experimental Farm, at Ottawa, Canada. 
In Nature of November 24, Mr. H. Charlton Bastian has again 
taken up the question of heterogenesis. 
A contribution to the study of fermentation, by Twight and Ash 
forms Bulletin No. 159 of the Agricultural Experiment Station of 
California. 
An elaborate monograph of Hungarian Gasteromycetes, by Hollós, 
has been issued in German translation from the Weigel Press of 
Leipzig. : 
A characteristic colored plate of Amanita muscaria is given in 
The American Botanist of October. 
A good “fairy-ring,” apparently of Agaricus arvensis, is figured in 
The American Inventor of January 1, 1905. 
Bulletin No. 75 of the Florida Agricultural Experiment Station is 
devoted to a discussion of potato diseases, by Hume. 
A new catalogue of the plants cultivated in the botanical garden at 
Buitenzorg, by Hochreutiner, is begun in Bulletin de Institut Botan- 
ique de Buitenzorg, No. 19. 
An account of the cuitivation of Papaver somniferum, and the pro- 
duction of opium, in the United States is given by Richtmann in the 
Pharmaceutical Review of November. 
A study of the chemical composition of some tropical fruits and 
their products, by Chace, Tolman, and Munson, forms Bulletin No. 
87 of the Bureau of Chemistry, U. S. Department of Agriculture. 
