574 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



Cabbage-root Maggots. By W. J. Schoene (U.S.A. Exp. Stn. 

 N.Y., Bull. 301; March 1908; figs.).— The author recommends that 

 to prevent the attacks of the cabbage-root maggots (Phorbia brassicae 

 and P. fusciceps) the seed beds should be protected by fly-proof screens 

 of cheese-cloth. The results of experiments along these lines are detailed. 

 The beds are made in rough wooden frames about 12 inches high, and, 

 as soon as the seedlings appear, the cheese-cloth is stretched over the 

 frames and kept on until about a fortnight before it is desired to trans- 

 plant. The method proved entirely successful, and the removal of the 

 screen for this length of time enabled the plants to become sufficiently 

 hardened, so that they did not suffer from wilting when they were 

 transplanted. — F. J. C. 



Cacao Industry (Jour. Imp. Dep. Agr. W.I. vol. ix. No. 2 ; 1908). 



— Papers read and discussions thereon at the West Indian Conference, 1908, 

 are reported in detail :- — 



"Results of Recent Experiments with Cacao in the West Indies." 



" The Characters of Criollo Cacao," by J. H. Hart, F.L.S. 



"The Improvement of Cacao Planting in the West Indies," by 

 J. H. Hart, F.L.S. 



"Fungus Diseases of Cacao and Sanitation of Cacao Orchards," by 

 F. A. Stockdale, B.A., F.L.S.— M. C. G. 



Caesalpinea japonica. By T. A. Sprague (Bot. Mag. tab. 8207). — 

 Nat. ord. Leguminosae ; tribe Caesalpineae. J apan and China. Shrub 

 6 feet high ; leaves bipinnate ; racemes 9 inches loog, with about 

 thirty flowers ; corolla lemon-yellow. — G. H. 



Campanula Waldsteiniana. By E. Wocke (Die Gartemv. lx. 

 p. 709 ; Nov. 21, 1908). — A late spring or summer flowering species, and 

 one of the smallest and prettiest of the genus. It forms little bushes or 

 tufts on wiry stems, with small canescent leaves and erect, short, tubular, 

 campanulate, pale blue flowers. — G. B. 



Chemistry: Simple Exercises illustrating- Application to 

 Agriculture. By K. L. Hatch (U.S.A. Dep. Agr., Off. Exp. Stn., 

 Bull. 195 ; January 1908). — A number of very simple chemical experi- 

 ments suitable for use in elementary schools. — F. J. G. 



Chinch Bug". By F. M. Webster (U.S.A. Dep. Agr., Bur. of Entom., 

 Bull. 69 ; June 1907 ; 18 figs.). — Bulletin 15 of this series contained an 

 account of all that was known up to the date of its publication concerning 

 the chinch bug ; the present paper is a thorough revision of that account. 

 The insect (Blissus leucopterus Say) is the cause of enormous pecuniary 

 losses. It is gregarious, and feeds upon all kinds of grain plants and 

 various other grasses, except perhaps Poa pratensis. It is sometimes 

 found feeding on Polygonum Convolvulus. The monograph, which runs 

 to ninety-five pages, deals exhaustively with all aspects of the insect's life 

 and habits and with methods of control. This species does not appear 

 to be known outside North America, but there are European species of 

 the same genus which are very destructive. — F. J. C. 



