657 



the case of basic arsenate, impossible of fulfilment ; the law says that 

 it must contain not less than 12| per cent, of arsenic oxide, the pure 

 laboratory product only containing 11 "71 per cent. The official 

 methods of assay are criticised as not giving the true amount of water- 

 soluble constituents, and as many of these are impurities, possibly 

 adulterants, which will react chemically with the lead salt and Uberate 

 soluble arsenic, their proper determination is of considerable conse- 

 quence. The last chapter of this bulletin is devoted to the chemical 

 reactions between the lead arsenates and lime-sulphur, and it is shown 

 that, when such mixture is made with the acid salt in the proportions 

 usual in field practice, considerable quantities of lead sulphide and 

 calcium arsenate are formed and free sulphur deposited, and that 

 appreciable quantities of arsenic pass into solution owing to the 

 solubility of the calcium arsenate ; with the basic salt, the reaction 

 with lime-sulphur is comparatively slight. 



Bentley (G. M.). The Tennessee Nursery Law, and condensed require- 

 ments relative to inter-State Shipments of Nursery Stock. —Tentiessee 

 State Bd. Entom., Knoxville, iv, no. 2, Bull. no. 13, June 1915, 

 32 pp., 2 figs. 



This bulletin gives a statement of the terms of the Tennessee Nursery 

 Law, approved 17th April 1905 and amended 6th July 1915. The 

 following insects are declared to constitute infestation in trees and 

 plants :~Aspidiotus 'perniciosus (San Jose scale), Aulacaspis pentagona 

 (West Indian peach scale), Eriosoma {Schizoneura) lanigerum (woolly 

 aphis), Anthonom,us grandis (Mexican cotton-boll weevil), Lyniantria 

 (Porthetria) dispar (gipsy moth), Euproctis clirysorrhoea (brown-tail 

 moth), Ceratitis capitata (Mediterranean fruit-fly), Phthorimaea 

 cperculellu (potato tuber moth), Aleurodes citri and A. nuhifera (citrus 

 whitefly). A brief summary of the laws of other States and of Canada 

 relative to the shipping, inspection and certification of nursery stock, 

 is given. Insects which have been declared pests in Canada are the 

 same as those given above, with the exception of the two Aleurodes. 



Ehrhorn (E. M.). Report of the Division of Entomology.— ^aw^amn 

 Forester and Agriculturalist, Honohdu, xii, no. 7, July 1915, 

 pp. 177-183. 



During April 1915, the following pests were intercepted : — Termites 

 on hop- vine roots from California ; Chernies sp. on cherry from Japan ; 

 bulb aphis on gladiolus bulbs ; Apliids on roses ; a weevil and Chalcid 

 parasites on palm seeds from Cuba ; cabbage maggot [HyJemyia 

 antiqua] on turnip ; potato tuber moth [Phthorimaea operculclla] on 

 potato. During May, Japanese and Chinese rice, beans, corn from 

 Manchuria and buckwheat from Oriental ports were found free from 

 insect pests. The following additional pests were intercepted : — 

 Anomala sp. and ants on the roots of cherry from Japan ; Brudms 

 chinensis in beans from Japan; and Aphids on hydrangea from 

 Pennsylvania. In the insectary large numbers of various parasites 



(C215) c 



