AESTRACTS. 



241 



Rusts of Horticultural Plants. By B. D. Halstead {Trans. 

 Mass. Ilort. Soc. ; two plates ; 1900). — A short history of the subject is 

 given, after which the rust diseases of particular plants, including 

 Asparagus, Hollyhock, Carnation, Chrysanthemum, are described. The 

 importance of selecting rust-resisting varieties, and of observing certain 

 necessary rules when inroads of attacking fungi are expected, are 

 emphasised by the author. — D. H. 



Ruthergflen Bug* {Nysins vinitor) (Agr. Gaz. N.S. Wales, Vol. xii. 

 Part 2, p. 247; February 1901). — This pest had attacked a Cherry crop. 

 The infested trees were so thickly covered that, on lifting a branch, one 

 •could hardly see the cherries, w^hich w^ere not only pricked all over and 

 Avithered, but also covered with excrement. Experiments with cyanide 

 and other acids are given which proved efitectual in destroying the w^hole 

 •of the bugs. Further notes are given on p. 310 re this pest by W. J. 

 Allen. The following fruits they appear to especially fancy : Peaches^ 

 Apricots, Cherries, Grapes, and Raspberries. The fruit is rendered 

 practically valueless for drying, canning, or jam-making. Not only doe.s 

 the bug puncture the fruit and extract the juice, but it leaves its excreta 

 behind, which makes the fruit repulsive in appearance. — A. W. S. 



Salsify and Scorzonera, Cookery of. By H. Roberts {GarcL 



2Iag. 2481, p. 308 ; 18/5/1901).— Various recipes for cooking Seakale, 

 Scorzonera and Salsify. The cooking of the last two vegetables being 

 little understood by ordinary cooks, the recipes for preparing them for the 

 table may be useful.- — W. G. 



Salvia splendens, 15 varieties of {Rev. Hon. p. 91 ; January 

 1901).— C. T. D. 



San Jose Scale Investigations. I. By V. H. Lowe and P. J. 



Parrott {Xeir York Agri. Exp. St. Bull. 193 ; five plates (one coloured) ; 

 Dec. 1900). — ^The present publication deals with the development of the 

 female insect, which was found to pass through three well-defined periods : 

 1. Active period ; 2. Period of growth (destructive stage), when it 

 attaches itself by its mouth to the food tissue ; 3. Reproductive period. 



D.R. 



San Jose Scale, Pure Kerosene for {Agr. Gaz. N.S. Wales, 



Vol. xii. Part 2, p. 236 ; February 1901). — A brief article showing 

 that pure kerosene has proved very effective, when applied care- 

 fully with a brush, in destroying San Jose Scale on deciduous fruit trees. 

 One expert writes that he painted eighteen ' Carrington ' and four 

 ' Nelson ' Apple trees which w^ere badly affected with this pest, and that 

 at the time of writing there was not a scale to be seen on any of them. 

 The only really effectual means of destruction is to attack the scale 

 insects in winter while the trees are bare of leaves, and after pruning. 

 The kerosene method is exceedingly simple and efficacious. — A. W. S, 



Sarcochilus lilacinus {OrcJiidece), ^lalayan Peninsula {Bot. Mag. 

 tab. 7754). — It bears pale lilac flowers, 1^ in. across. — G. H. 



B 



