fcOTES AND ABSTRACTS. 



773 



Copper Fungicides. By S. U. Pickering, F.R.S. (Jour. Agr. Set. 

 vol. iv. pp. 273-281). — The author returns to the question of the 

 action of copper compounds as fungicides, and shows that Messrs. 

 Barker and Gimingham in some of their experiments overlooked 

 the small quantity of copper which occurs in solution which was not 

 found by the potassium ferrocyanide test. They, as has been pointed 

 out in former abstracts, considered the solution of the copper com- 

 pound was brought about by the action of some substance excreted 

 by the fungus, but their failure to take into consideration the minute 

 quantity of copper already in solution leads the present author to 

 regard their conclusions as invalid, and to sustain his theory that 

 the solution of the copper compound in spray mixtures is the result 

 of the action of carbon-dioxide upon it. Lime is itself a fungicide, 

 and has, no doubt, considerable value as such in ordinary Bordeaux 

 mixture. — F. J. C. 



Combretaceae, S. African. By R. A. Dummer (Gard. Chron. 

 Jan. 25, 1913, p. 52, continued in eight later numbers and concluded 

 April 12). — An exhaustive monograph of the S. African species, with 

 key to genera on p. 53, and to the species of Combretum, p. 67. The 

 genera Combretum, Terminalia, Pteleopsis, and Quisqualis are dealt 

 with.— E. A. B. 



Connecticut, Report of, Agr. Exp. Stn. By Walter O. Filley 

 (1912 ; illustrated). — This is part six of the above report and contains 

 a vast amount of useful information, not only with reference to organ- 

 ization of the Connecticut Agricultural Experiment Station, but forest 

 planting in Connecticut, with numerous illustrations of various objects 

 connected with the life of the forester. — A. D. W. 



Coriaria terminalis (Bot. Mag. tab. 8525). — Family Coriaceae. 

 China, Tibet, and Sikkim. Undershrub, 1-4 feet high. Leaves 

 opposite if inch long, ij- inch broad. Racemes many-flowered, 

 6 inches long. Petals 5, fleshy, accrescent, orange. — G. H. 



Corokia virgata (Bot. Mag. tab. 8466). — New Zealand. Family 

 Cornaceae, tribe Corneae. Shrub, 8 feet high. Leaves oblong- 

 spathulate, 1} inch long. Flowers in 3-flowered racemes. Petals 

 yellow. — G. H. 



Cowpea Weevil, The. By F. H. Chittenden, Sc.D. (U.S.A. Dep. 

 Agr., Bur. Entom., Bull. 96, pt. iv. ; Oct. 1912 ; 1 plate, 1 fig.). — 

 The seeds of cowpeas are subject to the attack of several species of 

 beetles, of which the cowpea weevil (Pachymerus chinensis L.) and the 

 four-spotted bean weevil (P. quadrimaculatus Fab.) appear to be 

 specific enemies, injuring the seed in the same manner as the common 

 bean beetle. They begin operations in the field, and continue to breed 

 for successive generations in the stored seed until they entirely spoil 

 it for food and seriously impair its germinating power. Bisulphide 

 of carbon and hydrocyanic gas fumigation are the best methods of 

 control. — V. G. J. 



