388 



CoNRADi (A. F.) & Barre (H. W.). Spraying Program for Orchard 

 and Vineyard of South Carolina. — South Carolina Agric. Expt. Sta., 

 Clemson College, S.C., Circ. no. 25, Februax}' 1914, 8 pp. [Received 

 29th June 1917.] 



This circular contains formulae and directions for the making of 

 lime-arsenic spray for worms in peach and apple, self-boiled lime- 

 sulphur solution, Bordeaux mixture, a wash for tree-trunlcs, and 

 nicotine solution, and gives advice as to when peach, apple, pear 

 and plum trees and grape vines should be sprayed. 



Thomas (W. A.). The Cabbage Harlequin or Calico Bug. — South 

 Carolina Agric. Expt. Sta., Clemson College, S.C, Circ. no. 28, 

 December 1915, 3 pp. [Received 29th June 1917.] 



Miirgantia histrionica, Hahn (harlequin bug) hibernates in the 

 adult stage under rubbish. Maturity is reached in about two weeks 

 from the laying of the egg and reproduction continues from early 

 spring until stopped by the cold of autumn. The chief remedial 

 measures are the destruction of hibernating quarters and winter food- 

 plants by thoroughly cleaning up the garden and the planting of 

 trap-crops of early radish, kale, turnips, mustard or rape, for which 

 the insect shows a marked preference. The bugs may be destroyed 

 on these by spraying with kerosene or 25 per cent, kerosene emulsion. 

 It may also be controlled by burning, late in the evening, with kerosene 

 torches. 



LuTMAN (B. F.). Some Studies on Bordeaux Mixture. — Vermont Univ. 

 Agric. Expt. Sta., Burlington, Bull. 196, March 1916, 80 pp. 

 11 figs., 4 plates. [Received 29th June 1917.] 



In the course of this technical treatise on Bordeaux mixture the 

 author states that the injuries due to flea-beetles are much more 

 serious on unsprayed than on sprayed plants. In a normal season, 

 not far from a quarter of the gain secured by the use of Bordeaux 

 on potatoes may be attributed to its deterrent effect on this beetle 

 [Epitrix cucumeris]. 



Brittain (W. H.). Two Apple Leaf Mites of Economic Importance. 



— Canadian Entomologist, London, Ont., xhx, no. 6, June 1917, 

 pp. 185-189, 1 plate. 



Descriptions of the damage caused by Phyllocoptes schlectendali 

 (silver-leaf or rusty-leaf mite) and Eriophyes malifoliae (apple leaf 

 mite) have already been noticed [see this Revieiv, Ser. A, ii, p. 676]. 

 The former is of economic importance from the fact that the mites, 

 after feeding on the foliage during the summer, enter the twigs in 

 the autumn through old egg-blisters of Enipoa rosae (rose leaf-hopper) 

 or of Empoasca mali (apple leaf-hopper), or by means of a lenticel. 

 They give rise to incrustations, which frequently drop out during 

 the following year, rendering nursery stock so unsightly as to be quite 

 unmarketable. Neither insect seriously injures older trees, and as 

 they are both readily destroyed by summer sprays of lime-sulphur or 

 weak solutions of nicotine sulphate, their control should be a 

 comparatively simple matter. 



