396 



Rand (F. V.) k Pierce (W. D.). A Coordination of our Knowledge 

 of Insect Transmission in Plant and Animal Diseases. — Phyto- 

 pathology, Baltimore, x, no. 4, April 1920, pp. 189-231. [Received 

 14th July 1920.] 

 This paper reviews the present knowledge with regard to insect 



transmission of plant and animal diseases, and the importance in future 



studies of collaboration between pathologist and entomologist is 



emphasised. 



Pierce (W. D.). An Offer to the Sugar Planters to conduct the 

 Introduction of Cuban Parasites of the Sugar Cane Borer, — Mineral, 

 Metal cL- By-Products Co., Dept. Biol., Denver, Colo., Spec. Bull. 1, 

 March 1920, 6 pp. [Received 14th July 1920.] 



It is known that many growers of sugar-cane in the United States 

 are losing thousands of dollars' worth of sugar annually owing to the 

 depredations of the sugar-cane borer [Diatraea sacr.haralis], and that,, 

 wliile parasites have been introduced from Cuba with great success in 

 certain plantations in Louisiana, it is left to the planters themselves 

 to provide the funds and arrange for the introduction of the necessary 

 numbers of parasites into their plantations. 



The suggestion is made that if planters will subscribe funds with the 

 author as trustee, these funds will immediately be used to secure the 

 best methoiis of parasite introduction under a competent agent. 

 Laboratories will be established at New Orleans, as distributing centres, 

 and in Cuba. It is the intention of the Biological Department of the 

 Mineral, Metal & By-Products Co. to expand until it has the best force 

 of expert technical men in the commercial field, and eventually to 

 manufacture many of the chemicals required for agricultural projects 

 and to supply at reasonable figures fertilisers of standardised quality 

 and designed for particular soils. 



PiEECE (W. D.). A Proposition for the Reorganisation of Railroad 

 Agricultural Work in the Interests of Efficiency and Increased 

 Tonnage. — Mineral, Metal d Bi/- Products Co., Dept. Biol., Denver, 

 Colo., Spec. Bull. 2, March 1920, 7 pp. [Received 14th July 

 1920.] 



In furtherance of his schemes for the eradication of the Mexican 

 cotton boll weevil [AnOionomus yrandis] and other pests [R.A.E., A,. 

 viii, 1581 the author appeals to the railway companies of the United 

 States to give active support to a servdce that is designed to report 

 constantly upon msect pest conditions and enable experts to prepare 

 for probable insect infestations and check them at the start. It is 

 suggested that this should preferably be a joint raikoad imdertaking, 

 and it is pointed out how greatly the railroads would benefit by the 

 increased tonnage that would result from a decrease in insect depreda- 

 tions. A suggested method of financing the operations is described. 



Wakeland (C). Alfalfa Weevil and Control Methods. — Univ. IdahOy 

 Boise, Exten. Circ. 23, May 1920, 4 pp. 



This circular gathers together ui a concise form the known facts 

 that are valuable to the farmer in combating the alfalfa weevil [Hypera 

 variabilis] and the losses caused by it. [R.A.E., A, vi, 339, etc.] 



