ECONOMIC ZOOLOGY ENTOMOLOGY. 1155 



This fungicide, wliicli is not a new one, having been reeonunended for use 

 many yeai-s ago, was made by the author by placing 15 lbs. of fresh lime in a 

 barrel, pouring over it 2 or 3 gal. of boiling water, and immediately adding 

 10 pounds of sulphur and another bucket of hot water. The mixture will boil 

 vigorously for several minutes and should be stixTed and more water added 

 if the mass gets too thick. After the boiling ceases, which should be in from 

 20 to 30 minutes, the mixture should be diluted with cold water to make about 

 50 gal., thoroughly stirred, and strained to take out the coai-se particles of lime. 



This fungicide has been tested in connection with api)le bitter rot experiments, 

 apple blotch, apple scab, and leaf spot and found but little inferior to Bordean:: 

 mixture, and so far without any injurious effect. As a fungicide for the control 

 of peach brown rot and scab it has proved exceptionally favorable, as tho 

 amount of disease is greatly reduced, and the corrosive effect of the Bordeaux 

 mixture, resulting in a defoliation of the tree, is avoided. 



The self-boiled lime-sulphur mixture is said to have some effect as an 

 insecticide against scale insects, but is not so efficient as the boiled mixture 

 usually recommended. It can, however, be applied without injury to the trees 

 during any season of the year. 



The investigations reported are considered only preliminary and are the 

 basis for further experiments. 



ECONOMIC ZOOLOGY— ENTOMOLOGY. 



The destruction of rats, E. Bonjean (Qiiiiiz. Colon., It {1901), .Yo. 22, pp. 

 1007-1011). — In destroying rats in rooms and closed buildings it appears to be 

 wise to generate the gas simultaneously from above and below in order to drive 

 the rats from their hiding places if possible and expose them to its influence. 

 Good results may be obtained by burning 35 gm. of sulphur per cubic meter of 

 space or volatilizing 70 gm. of sulphurous anhydrid. The fumigation should 

 be maintained for a period of 2 hours. 



Field mice as carriers of warble flies, G. Korff {Prakt. BJ. Pflanzcnhau u. 

 Scliittz, n. so:, 5 (1007), Yo. 12, pp. ISS-l.'iO, fig. 1). — In capturing mice on a 

 large scale for use in a laboratory in the preparation of virus for the destruc- 

 tion of field mice it was observed that a number oi.' them were infested with a 

 warble fly which the author believes to be Hypoderma hovis. The larvae of 

 this insect were found underneath the skin in the same situation in which they 

 occur In cattle. The infested mice came from pastures used for cattle graz- 

 ing. The author suggests that this discoA'ery constitutes another reason fur 

 a general campaign of mouse destruction. 



Rodents injurious to rubber plants, J. Yosseleb {Pftanzcr, 3 (1907), No. 

 17-18, pp. 26H-272). — The roots and other parts of rubber and fiber plants are 

 considerably injured by the attacks of Georychtis cinereoarffcutatus, Rhizomys 

 splendcns, and a number of other species of rodents. 



Zoological yearbook, 1906, P. Mayer (ZooI. Jahrcshcr., 1907, pp. VIII -t- 

 606). — As in previous numbers of this publication extended bibliographical 

 lists are given, together with brief summaries of the more important literature 

 which appeared during lUOG relating to the various groups of the animal 

 kingdom. 



The application of economic biology to agriculture, W. E. Collinge (Jour. 

 Econ. Biol., 2 (J 907), Xo. 3, pp. 96-106). — Attention is called to the application 

 of biological investigation to economic agriculture, particular mention being 

 made of the important results obtained in plant and animal breeding, the dis- 

 eases of plants and animals, the control of insect enemies, and the biology of 

 the soil. 



50810— No. 12—08 5 



