236 EXPERIMENT STATION RECORD. 



only 2 out of l.'i dyiiiii'. It is tliouglit the results sliow tluit r>ordeaiix 

 mixture can be used advantageously as an inseeticidenpon such plants 

 as will not be injured for food by lia\iiig the lime on their foliage, and 

 on others it may b<^ used very early in tlie season, so that following 

 rains will wash off the lime before the erop is used. 



Insecticides and spraying, J. M. Aldrich {Idaho Sta. Bid. 7, pp. 

 /.s', ////,s'. i/). — ropular notes on insecticides, with formulas and direc- 

 tions for their application, and illustrated descriptions of various kinds 

 of apparatus for spraying. Especial mention is made of spraying for 

 the codling moth and San Jose scale, Paris green being recommended 

 for the former, and a sulphur, lime, and salt solution in the winter for 

 the latter. 



Our common insects, G. McCarthy {North Carolina Sta. Bui. 100, pp. 181-216, 

 fiqs. 65). — A comi)il(;cl general ;md popular illustrated bulletin on souie of the com- 

 moner hexapods, araclinids, and myriapods, with remarks on the classification and 

 life histories of iusects. Some of the more notorious injurious and beneficial insects 

 are described, and brief directions are given for combating noxious iusects and for 

 formiug entomological collections. A short list of books on entomology is appended. 



A family of water kings, C. M. Wekd {Pop. Set. Monthly, 1S94, Aiu/., pp. 443-446, 

 figs. 5). — An account of habits of giant Avater bugs, especially Belosioma americana, 

 B. griseus, Zaithafinminca, and Noiomcta undulata. 



A classification of Lepidopterous larvee, H. G. Dyak (Ann. N. Y. Acad. ScL, 8 

 (1894) Xo. ■/, )>i>. 104-:. '-l^, figs. o). — A new and apparently natural classification by 

 means of the sctiferous tubercles on the abdominal segments. A key, synopsis, 

 and many descriptions are given. 



The physiological mechanism of the generative apparatus of grasshoppers, 

 J. K. d'Hei:cu[,ais {Compt. Ilend., 119 (1894), Xo. 3, pp. Jii-?i7).— Notes on the 

 mechanism of <)vi])osition in several species. 



The poison gland of chilopod myriapods, O. Duuoscq (Compt. Bend., 119 (1894), 

 No. 5, pp. 352-354). — Anatomical descriptions of the venom apparatus, especially that 

 of the centipede Scolopcndra cingitlata. 



Cecidomyia destructor, A. Girard (Bui. Soc. Ent. France, 1894, Xo. 10, pp. 139, 

 140). — Remarks on the relationships of the Hessian fiy. 



The metamorphoses of Cecidomyia destructor, A. Laboulbene (Compt. Bend., 

 119 (1894), Xo. 4, pp. 297-300). — A description, chiefly compiled from American 

 sources, of the life history of the Hessian flj', with some original notes. 



The codling moth, A. Molixeux (Garden and Field, SO (1894), Xo. 2, pp. 69, 70).— 

 A paper on the codling moth with reference to its presence and ravages in Australia, 

 the description, life history, and treatment being given. Energetic and combined 

 efforts for its destruction are urged. 



An invasion of Heliophobus popularis in northern France, P. Marchal (Bui. 

 Soc. But. France, 1894, Xo. 11, pp. 156-159). — Report of a trip to a region being 

 devastated by the caterpillars of this species, which destroy all foliage and plants 

 except such as have a very acrid juice. Digging trenches around fields to be pro- 

 tected is advised, and burning the trapped larvte or killing them with quicklime. 



The San Jose scale, J. B. Smith ( Garden and Forest, 7 (1894), p. 374, fig. 1). — Gives 

 an account of the occurrence of Aspidiotus ])erniciosus on pears bought in the markets 

 of Philadcljihia, New York, and Brooklyn. 



"Bete rouge" (Boij. But. Gard. Trinidad, Mi.sc. Bui. 23, pp. 276, 577).— Brief notes_ 

 on Tromhidium sp. The Trinidad species is shown to l)e only two thirds the size of 

 the Jamaica one. 



Insecticides for use against the larvae of Eudemis and Conchylis (Staz. Sper. 

 Agr. Hal., 26 (1894), pp. 501-503). 



