572 JOUENAL OF THE EOYAL HOETICULTUEAL SOCIETY. 



found the species growing in dense tropical forest as an epiphyte or 

 on precipitous rocks, which were most difficult to reach. The real V. 

 Glaziouana he considers is only a dwarf mountain form, growing on dry 

 rocks, rarely attaining a height of over a metre. — G. B. 



Weevils, A List of Parasites of American. By D. Pierce (Jour. 

 Econ. Entom. i. (1908) 6. p. 380). — The Bhynchophora or weevils are 

 being found of great economic importance and this list of their parasites 

 will be found of very great utility to economic entomologists. A biblio- 

 graphy is appended. — F. J. C. 



Widdringtonia, Ovules and Embryo of (Bot. Gaz. vol. xlviii., 

 No. 3, pp. 161-178, September 1909; with 3 figs, and 1 plate.)— Mr. 

 W. T. Saxton describes the male gametophyte, which is " of the most 

 reduced type yet recorded in the Gymnosperms," the megaspores, 

 prothallus, archegonia, cytology and development of the embryo in 

 W. cupressoides. He considers that the genus is quite distinct from 

 Callitris and that Tetraclinis should be excluded from it. A comparison 

 is suggested provisionally with the Gnetales and especially with the 

 genus Tumboa.—G. F. S.-E. 



Wireworms, New Treatment for, By H. T. Fernald (Jour. Econ. 

 Entom., ii. (1909), 4, p. 279). — Wireworms have proved particularly 

 destructive to maize seed after sowing. The seed was tarred, as. is often 

 done to prevent crows from devouring it, and then placed in a bucket 

 with a mixture of fine dust and Paris Green, so that after treatment the 

 corn showed a greenish colour. The wireworms were in every case 

 repelled.— F. J. G. 



" Woburn, Eighth Report," 1908. By the Duke of Bedford, KG., 

 and Spencer U. Pickering, F.R.S. — This Report deals entirely with 

 insecticides and fungicides, the aim being to substitute exact quantitative 

 measurements for the more crude and unsatisfactory methods usually 

 adopted. See separate abstracts under "Emulsions," "Bordeaux 

 Mixture," "Mussel Scale," "Adhesive Power of Lime Washes," and 

 " Sprays " generally. — A. P. 



Woolly Aphis. By L. Chasset (La Pomologie Francaise, pp. 398-400 ; 

 December 1908). — The silky coveriDg is soluble only in alcohol, ether and 

 strong potash ; it is necessary to dissolve this protection without injuring 

 the bark or the leaves. 



The following is found to give very good results in destroying the 

 insect : — 



Alcohol for burning, or common brandy . . 1 oz. 



Nicotine at 15° or 20° 1 oz. 



Water \ oz. 



Apply at the time of the fall of the leaf and in summer, with a brush 

 without touching the leaves. 



To destroy the Woolly Aphides which winter at the root, place three 

 or four capsules of sulphide of carbon in the ground, close to the 

 stem. March is a good month for this before the insects leave the 

 ground.— C. H. H. 



