ABSTRACTS. 



939 



1901), pp. clix-cxcviii). — An interesting account of the public and the 

 principal private gardens at Hyeres and the neighbourhood, and of the 

 special features of their horticulture. — A. W. B. 



Hypodiseus capitatus and H. Dodii. By M. T. Masters (Joum. 

 Bot. 468, p. 402 ; 12/1901). — Description of new species from the Cape 

 Peninsula. — G. S. B. 



Improvement of Plants. By Prof. G. H. Powell, Washington, 

 D.C. {Amer. Gard. xxii. pp. 668, 682, 717; 28/9/1901; 5/10/1901; 

 19/10/1901). — A series of interesting articles laying special stress on the 

 variation of individual buds of the same tree, which, though perhaps slight 

 at first, may be increased into a valuable variety by the cumulative 

 selection of several generations of buds in a certain direction. 



This process is naturally distinct both from ordinary sexual repro- 

 duction, and also from the selection of decided sports in bud variation. 



C. C. H. 



India-rubber in Rhodesia. By Major Colin Harding {Bull. Bot. 

 Dep. Trinidad, No. 31, p. 387 ; October 1901). — Extract from the India- 

 rubber and Guttapercha Trades Journal. An account of three indigenous 

 plants productive of rubber : (1) Landolphia florida, (2) Funtumia 

 elastica, (3) Capodinus lanccolatus. — E. A. B. 



Insects, Noxious, in Maryland. Miscellaneous entomological notes 

 by Prof. W. G. Johnson {U.S.A. Hort. Soc. Maryland, vol. ii. 1899, with 

 figs.).— Notes are given on : — 



Strawberry insect {Myodocha serripes) ; the whole crop destroyed by 

 this insect. 



Apple-trees suffering from the depredations of the locust leaf -beetle 

 {Odontota dorsalis) defoliating the trees. 



Pear and Plum. The young buds were seriously damaged by the 

 tarnished plant bug {Lygus pratensis). Spraying -wdth kerosene and water 

 had been adopted. 



Pear Psylla. Unusually abundant in large Pear orchards ; 400 

 dwarfed Duchesse Pear trees so seriously damaged that they will be cut 

 down. The pest is Psylla pyricola. 



Currant worm {Pteronus {Nematus) ribesii). Attacked Currant and 

 Gooseberry early in May and was a serious pest throughout the State. 



Plum curculio {Conotrachelus nenuphar) unusually abundant, the 

 principal injury being to the Peach crop, and some injury to the Apple. 

 (Fig. 12.) 



Strawberry weevil {Anthononius signatus). Appeared in quite destruc- 

 tive numbers. The last general outbreak was in 1896. No satisfactory 

 remedy is known. 



Grape vine flea beetle {Haltica chalybea) \evy abundant on Grape 

 vines in the upper counties. The main injury was done to the leaves, 

 and not to the unfolding buds. 



Hessian fly {Cecidomyia destructor). Conspicuously abundant in the 

 early-sown Wheat. 



