1068 EXPEEIMENT STATION RECORD. 



recent work with hydrocyanic-acid gas, and the economic value of fumigation. 

 Abstracts are given of the laws regulating nursery and orchard inspection and fumi- 

 gation in the United States, Canada, and other countries. The chapter devoted to a 

 discussion of carbon bisulphid contains an accoimt of the use of this chemical in 

 fumigating seeds, fruits, plants, mills, and other buildings; in the destruction of 

 insect pests in clothes, and in killing prairie dogs, rats, mice, and other injurious 

 animals. 



Report of analyses of Paris green and other insecticides in 1901, L. L. 

 Van Slyke and W. II. Andrews {Xew Yark State Stn. liul. :W4, pp. 34^3-^50).— The 

 authors analyzed 40 samples of Paris green and found that the amount of arsenic 

 varied from 56.13 to 62.87 per cent. So far as the total arsenic content is concerned 

 the Paris green examined was of high quality, the percentage of arsenic being greater 

 than that required by law. The amount of free arsenious oxid found in these sam- 

 ples varied from 0.88 to 2.64 per cent, the average being 1.28 per cent. This quantity 

 of free arsenic is considerably below the danger limit, and the Paris green sold in 

 the New York markets is therefore considered effective and safe. The amount of 

 copper in the samples examined varied from 26.53 per cent to 31.14 per cent. Analy- 

 ses were also made of English Bug Compound, Laurel Green, London purple, and 

 Paris-green Bordeaux mixture. 



Fung-icides, insecticides, and spraying calendar, G. E. Stone, H. T. Fer- 

 NALD, and S. T. Maynard {3Iassachvsetts St((. Bui. 80, pp. 15). — Brief directions for 

 preparing and applying the common fungicides and insecticides, and their combina- 

 tions, together with a spraying calendar. 



A new fungus disease for Rutherglen bug {Agr. Gaz. Neir South Wales, 12 

 {1901), No. 12, p. 162U). — The department of agricuhure of the Colony has imported 

 sami)les of Sporotrichxim glohuUferum, and it is hoped that this fungus may ))e of some 

 service in checking the ravages of NyaluH nnitor. 



Insects injurious to stored grain, J. M. Stedman {M'mnuri State Bd. Agr. Ept. 

 1900, pp. i()~^-i07).— Brief notes on pea weevil, species of bean weevil, Calandra 

 granaria, C. oryzie, Silvanus sar'mamensh, S. cassia', and the Angoumoi.'j grain moth. 



Systematic catalogue of the galls of animal origin of Europe and the Med- 

 iterranean basin, G. Darboux and C. Houard {Catalogue systematique des zoocecidies 

 de r Europe et du Basshi Mediterranern. Paris: Lahoratoire d' Evolution des Etres Organ- 

 ises, 1901, pp. ,544, figs. 86S). — The authors classify the various gall formations, which 

 are found on plants and which are due to animals, in a system which is Itased on the 

 part of the plant which is affected. In general, plant galls may be classified into 

 those which affect the apex of growth and those which affect the lateral surfaces of 

 growing parts. Each general class may then l)e divided according to the actual struc- 

 ture which is attacked. Galls which affect the tip of growing parts may be arranged 

 into classes according as the fruit, inflorescence, flower, bud, or apex of twigs are 

 affected, while the other general classes of galls may be subdivided into those which 

 affect the root, stem, or twig and leaf. The species of animals which cause the various 

 plant growths belong to the following families: Eryophyida;, Cynipida?, Tenthredi- 

 nidse, Cecidomyidif, Aphididte, and Psyllidte. 



The mosquitoes of Paris, their injuries, and means of eradication, R. 

 Blanchard {Arch. Parasit., 5 {1901), No. 4, PP- G 15-635). —The only species of 

 mosquito which the author has been able to find in Paris is Cidex pipieus. Accord- 

 ing to the testimony of other authors, however. Anopheles macuiipennis has been also 

 found in the city. The author gives brief notes on diseases with which mosquitoes 

 are supposed to be connected as carriers of infection, and on the habits and life his- 

 tory of these insects. In combating mosquitoes a discussion is given on the efficiency 

 of the method of adding pyrethrum flowers to water in which mosquito larvee are 

 found. In destroying adult mosquitoes the use of various substances for fumigation 

 is discussed. These substances include essence of terebinth, iodoform, chloroform, 



