552 EXPERIMENT STATION EECOED. 



encroaches upon the cell walls, the xylem becoming delignlfied and the walls 

 penetrated and consumed. This change renders the tissue spongy and crumbly, 

 examination showing it to consist more of the fungal hyphse than of the origijial 

 material of the tree. 



Further observations on Himeola auricula-judae, M. J. Le Goc {'New 

 Phytol., 13 {1914), No. 4-5, pp. 122-133, figs. 9).— Concluding a fuller account 

 covering later study than that noted above, the author states that germination 

 of the spores of the Jew's ear fungus takes place readily and occurs even on the 

 fructifications if these are kept moist. Basidiospores developed in nutritive 

 solutions, but less frequently in water. Conidia are produced rarely and only in 

 distilled water, so far as noted. Pure cultures of the fungus grow readily on 

 elder, lime, and elm wood, producing rudimentary fructifications. Penetration, 

 delignification, and almost complete consumption of the wood quickly follow 

 natural infection with the fungus. Inoculations on healthy living twigs of elder 

 were often successful, the hyphas penetrating slowly at first, but finally killing 

 the twigs. 



Some observations on abortive sporophores of wood-destroying fungi, J. 

 R. Weib {Phytopathology, 5 {1915), No. 1, pp. 48-50). — Attention is called to 

 the presence of hard, brown, sterile, abortive sporophores which are commonly 

 observed on birches and alders. The author reports having collected these struc- 

 tures from the paper birch, associated with the fertile sporophores of Fomes 

 igniarius. Abortive fruiting structures are also said to be occasionally formed 

 by Echinodontium tinctorium on old and badly decayed hemlock, and similar 

 structures are produced by Trametes pini on the western white pine. 



ECONOMIC ZOOLOGY— ENTOMOLOGY. 



Zoological philosophy: An exposition with regard to the natural histor> 

 of animals, J. B. Lamarck, trans, by H, Elliot {London: Macmillan & Co., Ltd., 

 1914, pp. XCII+410; rev. in Nature [London], 94 {1915), No. 2363, pp. 639, 

 640). — This is a translation of the author's Philosophie Zoologique, which was 

 published in 1809, half a century before Darwin's Origin of Species, and is one 

 of the evolution classics. 



Some Canadian rodents injurious to agriculture, N. Ckiddle {Agr. Gas. 

 Canada, 2 {1915), No. 2, pp. 110-114, fig. i).— This is a brief account of the 

 more important Canadian rodents and means for their control. 



How plague may be carried from place to place {Put). Health Rpts. [U. S.], 

 30 {1915), No. 13, pp. 891, 892). — This article records the finding of a live 

 plague-infected rat at Seattle, Wash., in a large box containing plants imported 

 from Yokohama, Japan. 



Bat proofiing the public docks of New Orleans, H. P. Letton {Put). Health 

 Rpts. [U. S.], SO {1915), No. 8, pp. 545-555, pis. 4, figs. 5).— A report on the 

 possibility and cost. 



The economy of ground squirrel destruction, J. D. Long {Pub. Health Rpts. 

 [V. S.}, 29 {1914), No. 50, pp. 3311-3321).— The author points out the various 

 advantages resulting from the destruction of ground squirrels in California. 



Cimex pipistrelli, the intermediate agent in the transmission of trypano- 

 somiasis of bats; the nonpathogenicity of Trypanosoma vespertilionis for 

 laboratory animals, E. Pringault {Conipt. Rend. Soc. Biol. [Paris], 76 {1914), 

 No. 19, pp. 881-884; al)S. in Rev. Appl. Ent., 2 {1914), Ser. B, No. 11, pp. 173, 

 174). — The author's experiments indicate that this bug is the intermediate host 

 of T. vespertilionis and that this trypanosome is not pathogenic for mice, rats, 

 guinea pigs, or rabbits. 



