274 EXPERIMENT STATION RECORD. 



funtrifiileswhicli arc fironpcd by the author into 4 classes — suliilinr fungici(le8, liquid 

 copper funfiricide.s, ])n\v(lcr('(l (•(ipj)er and sulphur, and li(juid cojjper and sulphur 

 mixtures. In all of these the lineness of the particles and thoroughness of aj)plica- 

 tion have a most important bearing ujjon their efficiency. In the case of the diffei*- 

 ent forms of sulphur used the precipitated sulphur is preferred to the sublimed or 

 triturated form, on account of its muc-h greater fineness. Attention is called to some 

 of the changes which take place in li(|uid fungicides when made up and allowed to 

 stand for a consideniljle time. It is said to l)e sometimes necessary to apply a dress- 

 ing of i)owdered suli)hur between the sprayings with liquid fungicides to ward off 

 severe attat-ks of the powdery mildew. 



Some of the newer fungicides, B. D. Halsted and J. A. Kelsey {Nev> Jemey 

 Stus. Ihil. ]G7, i>}>. l-'), pis. -J). — The authors review different formulas for the prepa- 

 ration of Bordeaux mixture and give particular attention to the preparation and use 

 of soda-Bordeaux. The use of this fungicide has been described in previous reports 

 of the station, and in the present bulletin the authors recommend the following 

 formula fur its jireparation: Soda (Lewis's Lye) 1 "pound" can, copper sulphate 3 

 lbs., lime 5 oz., and water 30 gal. This preparation has been successfully used not 

 only in New Jersey, but elsewhere, and has the advantage of being equally as effi- 

 cient as Bordeaux mixture made by the usual formula, but without the objectionable 

 mechanical features of the ordinary Bordeaux mixture. 



Attention is called to the use of formalin as a fungicide for disinfecting seed grain 

 and for the prevention of potato scab, and notes are given on kerosene emulsion as a 

 fungicide. A preliminary report on the use of kerosene emulsion in this way was 

 given in the report of the station (E. S. R., 15, p. 579). These investigations have 

 been continued, and it has been found that for the prevention of mildew on orna- 

 mental shrubs it is a very efficient treatment. 



ENTOMOLOGY. 



The elements of insect anatomy, J. II. C'omstock and Y. L. Kellogg {Ithaca: 

 Comstock Pub. Co., 1902, 4- ed- rev., pp. 145, figs. 11). — In this volume the authors 

 have outlined a course of study in the gross and microscopic anatomy of insects. 

 The following topics discussed in the volume may be especially mentioned — external 

 anatomy of locusts, internal anatomy of Corydalis cornuta, anatomy of the larvje of 

 the crane flies, external anatomy of beetles, mouth parts of insects, venation of the 

 wings, and methods of insect histology. 



Notes on economic entomology, F. V. Theobald {Jour. Southeast. Agr. Col., 

 Tl//f', 1903, Nil. 1"2, pp. 50-85, ph. 2). — The author discusses the sul>ject of injurious 

 flea-beetles and their eradication. Notes are given on the damage caused by these 

 insects, the method of invasion of beetles, and the effects of weather upon them. 

 The more important genera of flea-beetles are briefly characterized and detailed notes 

 are given on a number of .specially injurious species, including Haltica oleracea, Phyl- 

 loireta nemorum, P. undulata, P. crucifcne, P. consohrina, P. atra, Crepidodera rufij)es, 

 C. aurata, etc. The habits, life history, and means of combating sheep botfly are 

 briefly discussed. The author reconnnends that tar should be smeared over the 

 receptacles in which salt is kept, so tliat the sheep will come in contact with the tar 

 in securing the salt. The tar serves as a deterrent to the sheep botfly. The author 

 describes in consideralile detail the life history of Pemphigus spirotheav, which is 

 reported as injurious to poplars. An article on the migration of the hop aphis, 

 written by Plondey in 1849, is reproduced. 



Injurious insects, E. Fleutiaux {Agr. Prat. Pays Chauds, 2 {1903), No. 12, pp. 74S- 

 760). — Notes on a weevil {Sphenophorus sordidut<) injurious to the trunks of bananas; 

 an enemy of beeswax {Arhroia grisella); a species of grasshopper injurious to coffee; 

 bean weevils; beetles injurious to mulberries, coffee, and other trees. 



