NOTES AND ABSTRACTS. 



753 



on the bark. Probably (as is the case with the attacks of many insects) 

 the trees are not in vigorous growth when first infested. Paraffin in some 

 form is the best remedy to use ; a solution of paraffin emulsion is the 

 best. Paraffin and soapy water is usually effective if the mixture be 

 kept very well stirred ; but this is not easy, as the paraffin is so much 

 lighter than the water that it will float on the top. It should be applied 

 with a large brush or garden engine. — G. S. S. 



Beet, Varieties of the. By Auguste Dieuleveut (Rev. Hort. 

 pp. 97-99, Feb. 16, 1904 ; 6 woodcuts). — A number of strongly recom- 

 mended varieties described and figured, few of which are in vogue. 



C. T. D. 



Begonia, An Ecologically Aberrant. By W. Trelease (Rep. 



Missouri Bot. Gard. pp. 79-81 ; pi. 28 and 29 ; 1904). — A description 

 by Dr. J. N. Rose of a new species of tuberous Begonia, B. unifolia, from 

 the Iguala canon, Mexico, growing on ledges of disintegrating limestone, 

 and found also near Jojutla, Morelos. It has but one radical leaf, which 

 is closely applied to the rock, the scape rising through its sinus. The 

 flowers are nearly white. — G. S. B. 



Begonia decora Rene Jarry-Desloges. By R. Jarry-Desloges 



(Beu. Hort. pp. 232-233, May 16, 1901 ; coloured plate).— A very fine form 

 of the ' Rex ' type. Leaves pale bluish-green ground, flushed medially with 

 pink, with a bold pinnatiform, dark brown centre, and well-defined margin 

 of same tint. — C. T. D. 



Begonia, new Species from Tropical Africa. By E. Gilg 

 (Engl. Bot. Jahrb. xxxiv. pp. 86-98, March 1901). — The author describes 

 nineteen new species, chiefly from the Cameroons, recently collected by 

 various German collectors. — A. B. B. 



Begonias, Cuttings of Tuberous. By Georges Bellair (Rev. Hort. 

 pp. 382-384, Aug. 16, 1904 ; 3 woodcuts). — Cuttings should be taken in 

 the ordinary way from matured growths, severed just below a dormant 

 eye, and inserted from July to mid- September in beds under a north 

 wall ; compost sandy peat. They should be well watered, and, if neces- 

 sary, protected from heat by screen. Care should be taken that the eye 

 should not be a flowering one, since, though the cutting will produce a 

 corm at its base, the eye will be lacking and growth prevented. The 

 corms, if potted up in October and kept from frost, will start growth in 

 March.— C. T. D. 



Bell Glasses (Cloches), Ventilation of. By J. Cure (Rev. Hort. 

 pp. 15-16, Jan. 1, 1904). — Two woodcuts show a simple arrangement for 

 admitting air to various extents by means of wooden pegs notched step- 

 fashion on one side to carry the bell-glass rim at any desired height. 



C. T. D. 



Bicarpellary Beans. By E. Drabble (Joum. Linn. Soe. vol. xxxvii. 

 p. 17, figs. 1-6). — An interesting series of these fruits were obtained in 



D D 



