266 EXPERIMENT STATION RECORD. 



San Jose scale, Y. S.iostedt {Scrnfibt Triidgdrdsfor. Tkhlr., 1900, Nos. 10, pp. 

 153-156; 11-12, pp. 180-182, figs. 6). — A general account of the habits, life history, 

 and remedies for this insect. 



Pure kerosene for San Jose scale {Agr. Gaz. New South Wcdes, 12 {1901), No. 2, 

 J). 236). — Apple trees were painted with pure kerosene during a dormant condition. 

 The scales were all killed by the application and the trees were not injured. 



Classification of Aspidiotus, G. Leoxardi {Riv. Patol. Veg., 8 {1900), No. 7-12, 

 pp. 298-369, figs. 22). 



The scale insect and mite enemies of citrus trees, C. L. Maklatt ( U. S. Dept. 

 Ayr. Yearbook 1900, pp. 247-290, pis. 6, figs. 25). — The author presents a general 

 account of the life history and habits of scale insects, wdth especial reference to those 

 which are injurious to citrus trees. A discussion is also given of the various methods 

 which have been found most successful in treating these insects, including various 

 sprays and fumigation with hydrocyanic-acid gas. Special descriptive, biological, 

 and economic notes are given on Mytila.'ipis gloveri, M. citricola, Aspidiotus ficus, A. 

 .aurantii, A. liedens, Parlatoria ])ergandei, Chionaspis citri, Lecanium olecc, L. hesperidum, 

 L. hemisphxricum, Ceroplasfes floridensis, C. cirripediformis, Icerya jmrchasi, Dactylopius 

 citri, AJf'i/rndes citri, Phytoptus oleivorus, and Tetranychus sexmacidatus. 



Phylloxera, J. A. Ortiz {Bol. Ofic. Agr. Ganndera, 1 {1901), Mar., pp. 63-67).— 

 A general description of the insect and a historical account of its introduction into 

 Argentina. 



Smyrna fig culture in the United States, L. O. Howard ( U. S. Dept. Agr. Year- 

 hook 1900, pp. 79-106, 2)ls. 7, figs. 7). — This article contains a historical account of the 

 introduction of the fig insect into California, with brief notes on the possibility of fig 

 culture in the United States. The various stages of Blastophaga grossorum are described 

 and illustrated. 



Insects injurious to pine trees, K. Hagstro.m {Landtmannen, 11 {1900), No. 51, 

 pp. 821, 822). — The life history and injurious habits of Hylesinus piniperda are described 

 in considerable detail. As a remedy against this insect it is suggested that a few 

 pine trees be felled in January and allowed to remain upon the ground until the 

 larvse are ready to cliange into the pupal condition. The bark may then be stripped 

 from such logs and burned along with the larvte. 



Mites injurious to animals, R. S. MacDougall ( Trans. Highland and Agr. Soc. 

 Scotland, 5. .sec, 13 {1901), pp. 244-276, figs. 8) .—A general scheme of classification for 

 mites is presented and a discussion is given of injurious ticks and approved remedies 

 for combating the common species which are injurious to animals. Among the mites 

 which are discussed in the report, mention may be made of Demodex folliculorum, 

 Trombidium holosericeum, Leptus autumnalis, species of Sarcoptes, Psoroptes, and 

 Symbiotes, which cause mange on domestic animals, sheep tick, dog tick, and chicken 

 mite. A general discussion is given to the subject of dips for use in the treatment of 

 sheep scab. 



Protection of animals against the attacks of flies, G. del Guercio {Nuove 

 Relaz. R. Staz. Eat. Agr., 1. ser., 1900, No. 3, pp. 421-424)-— The author had consid- 

 erable success in dri\ing away forest flies {Hippohosca equina) by the use of a solution 

 of olive oil and kerosene. Similar experiments were tried in protecting cattle against 

 the attacks of Tahanns autumnall% T. hovinus, and T. morio. An animal treated with 

 this solution was observed for a period of 2 hours in a locality where the Tabanidpe 

 were numerous, and during this time only 3 skin punctures were made and those 

 Avere in locations which had not been reached by the insecticide. Another animal 

 which was left without an application of the insecticide was seriously bitten by the 

 flies. The mixture recommended l)y the author contains 100 parts of olive oil and 5 

 parts of kerosene. 



Parasites of insect pests, C. Harper {Jour. Dept. Agr. West. Australia, 3 {1901), 

 N^o. 2, pp. 114-122). — This article contains notes on a dipterous parasite of grasshop- 



