ENTOMOLOGY. 385 



related genera, causing the destruction of the pollen. The mycelium which invades 

 the anthers changes their contents to a violet-colored mass. The author has traced 

 the mycelium through the various organs of the plant and shows that it is perennial 

 in the rootstock of the host. 



A brief review of Special Bulletins 24, 25, and 26, C. D. Smith {Michigan 

 tita. Bill. 216, pp. 7). — This consists of a review of the following special bulletins of 

 the station: Insect Enemies of Fruits in Michigan, by R. H. Pettit (E. S. R., 15, p. 

 1089); Fungus Diseases of Fruits in Michigan, by B. O. Longyear (E. S. R., 16, p. 

 67); and Spraying Calendar, by L. R. Taft (E. S. R., 16, p. 281). 



Tieghemella japonica, K. Saito (Jour. Col. ScL, Imp. Univ. Tokyo, 19 (1904), 

 Art. 19, pp. 8, pi. 1) . — A description is given of Tieghemella japonica, a new species of 

 fungus recently found in a sake cellar in Japan. The morphology and physiology 

 of the fungus, together with its technical characteristics, are described. 



Some observations on the appearance of the oat nematode, K. Hansen 

 (Tidsskr. Landbr. Planteavl, 11 (1904), pp. 279-302).— -The investigations of the author 

 show that the oat nematode is widely distributed in Denmark and that great losses 

 result from its attack. The reasons which lead the author to doubt the identity of 

 the oat and the beet nematode (Heterodera schachtii) are given in the paper, and 

 various remedies recommended for combating both nematodes are considered. 



The following preventive treatments are suggested: A system of crop rotation in 

 which oats, or mixtures of small grains containing oats, do not come oftener than 

 every second, and preferably not oftener than every third or fourth year. As barley 

 is also attacked by nematodes that undoubtedly are identical with the oat nematode, 

 the safer plan is to exclude this crop also from the system of rotation, in the same 

 way as oats, where there is danger of an attack of nematodes. Early sowing has 

 been found of advantage in reducing the severity of an attack of nematodes, and the 

 same holds true in regard to manuring, especially with nitrogenous fertilizers, which 

 tend to render the crop more resistant toward the nematodes. — f. w. woll. 



ENTOMOLOGY. 



Insects, L. F. Hexxeguy (Les insectes. Paris: Masson & Co., 1904, pp. 804, pis. 4, 

 figs. 622). — The present volume is intended as a general text-book on the subject of 

 entomology and was prepared for the use of French entomologists partly for the 

 reason that text-books on this subject in the French language were inadequate. 



The book is essentially the author's class lectures collected by A. Lecaillon and 

 G. Poirault and considerably elaborated for the present purpose. The subjects dis- 

 cussed in the volume include the general characteristics of insects, classification, 

 anatomical peculiarities of the external skeleton, integument, digestive apparatus, 

 circulatory system, respiratory organs, fat bodies, physiological functions of the mus- 

 cular and nervous systems, reproductive organs, parthenogenesis, and methods of 

 reproduction, embryology, larval development, metamorphosis of insects, and the 

 origin of adult structures from embryonic tissues. 



The literature relating to various subjects is briefly reviewed and a bibliography of 

 62 pages is included in the volume. 



Nineteenth report of the State entomolog-ist on injurious and other insects 

 of the State of New York, E. P. Felt (New York State Mm. Bui. 76, pp. 91-235, 

 pis. 4)- — As in former reports by the State entomologist of New York, a general 

 account is given of insect outbreaks during the year, office work, special investiga- 

 tions, publications, collections of insects, nursery inspection work, voluntary 

 observers, etc. A synopsis is presented of a number of beneficial insects belonging to 



11584— No. 4—04 6 



