198 JOURNAI/ OP ECONOMIC ENTOMOLOGY [Vol. 2 



hibernate. Fields should be located where damage can be avoided so far as 

 possible. The above measure should be supplemented by wide and early 

 planting in well prepared ground. A new agricultural implement devised by 

 Dr. W. E. Hinds and known as the chain cultivator is figured and described. 

 This implement is designed particularly to pulverize the surface soil and at 

 the same time to work the infested squares toward the middle of the row, 

 where they would be more exposed to the sun and the weevils more likely to 

 perish. 



What Constitutes a Perfect Stand of Cotton When Fighting the 

 Boll Weevil, by Wilmon Newell, La. St. Brd. of Ag-ric. Immigra. 

 Spec. BoU Weevil Bull. No. 1, p. 1-15, 1909. 



The author calls attention to the fact that a perfect stand of cotton with 

 boll weevil present is very different from what constituted a perfect stand 

 before its advent, since this pest does not permit the plant to "make" during 

 an entire season. A summary of the experiments shows that on upland 

 prairie and bottom land during two very different seasons the average yield 

 of closely planted cotton was 467<j or 282 lbs. more per acre tlian in widely 

 planted fields. This bulletin is particularly interesting, since it gives concrete 

 statements respecting the effects following modification of agricultural treat- 

 ment in an effort to control an insect pest. It is well within the province of 

 the entomologist to determine the practical outcome of his recommendations. 



The Saddled Prominent, bv Edith ]\I. Patch, Me. Agric. Expt. 

 Sta. Bull. 161, p. 312-50, 1908. 



This is a detailed account, based on the literature and original observations 

 and with a bibliography, of Heterocampa guttivitta, a species which has been 

 very destructive in Maine to both forest and fruit trees. The author in dis- 

 cussing the control of this species emphasizes the necessity of depending upon 

 natural enemies, such as birds and other animals. The value of the bulletin 

 is greatly enhanced by a series of original illustrations. 



The author in bulletin 162 (p. 351-68) gives biological notes on a number 

 of injurious species. Among the more interesting is a new spruce Tortrix, 

 ArgyropJoce aMetana Fern, a new Noctuid for apple, Crocigrapha normani, 

 the European DeilepMla galUi, Eriophyes fraxiniphila Hodgk. and E. fraxini 

 Nal. on ash. The bulletin is illustrated by a number of original process 

 plates. The latter would have been much improved had a better quality of 

 paper been employed. 



The Mosquitos of the Philippine Islands, by Clara Southmayd 

 Ludlow. A Thesis Submitted to the Faculty of the Graduate Stud- 

 ies of the George "Washington University, etc., p. 1-65, 1908. 



This thesis consists of a large number of records showing the connection 

 between the prevalence of mosquitos and the Incidence of malaria. Culex 

 fatigans is stated to be a host of Filaria bancroftii and more than suspected 

 as a host of Filaria philippensis, while Ashburn and Craig claim it as a host 

 for Dengue. Mansonia utiiformis is given as a proven host for Filaria 'ban- 

 croftii in Africa. Four Anophelinre, Myzomyia funesta, M. ludloicii, Myzor- 

 hynchtis barbirostris and M. fuliginosus, are listed as probable malarial hosts 

 in the Philippines. An extended bibliography accompanies the paper. The 



