94 i JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



Experiment Station, p. 31, tables). — A report on the pests of the horti- 

 culturists in this State, describing several, such as Anosia plexippus, Ips 

 fasciatus, a,nd Tmetocera ocellana. — V. J. M. 



Insects, Three injurious (U.S.A. Exp. Stn. South Dakota, 

 April 1890, with cuts). — This bulletin contains descriptions, with figures, 

 of three injurious insects : The Box Elder twig-gall moth (Proteopteryx 

 spoliaiia) ; the web-spinning saw-fly of Plums and Cherries [Lyda 

 spoliana, or, as since named by Marriott, Lyda rufipes) ; and the Wheat- 

 stem maggot (Meromyza Americana). With some methods of treatment. 



M. C. C. 



Iresine (Achyranthes) variegated * Panache de Bailly.' By 



H. Dauthenay [Bev. Hort. p. 474 ; October 1901). — An improvement on 



I. aiireo -reticulata ; foliage golden yellow, somewhat greenish when 

 mature. Raised from dimorphic plant of I. Herbstii brilliantissime fixed 

 by cutting.— C. T. D. 



Iris Ewbankiana. By M. Micheli (Rev. Hort. pp. 398-9 ; Sep- 

 tember 1901).— Two woodcuts ; sub-genus Oncocyclus (described in Gard. 

 Chron. 1901, i. p. 397).— C. T. D. 



Irises, A new race of hybrid alpine. By W. J. Caparne (Gard. 

 Chron. No. 779, p. 397, sup. plate, November 30, 1901).— Descriptions of 

 these Irises are given, with their colours, and directions as to the best 

 methods of cultivation. — G. S. S. 



Irrigation. By E. J. Wickson (U.S.A. Dep. Agr. Farnters' Bull. 

 No. 138, eighteen figs.). — The introduction insists upon the value of 

 irrigation, even in districts where th§ natural moisture seems ample. It 

 must be remembered that water is not only a necessity in itself, but the 

 means by which plants are enabled to make full use of the other foods 

 supplied to them. The writer then proceeds to give clear and detailed 

 descriptions, assisted by figures of various methods of irrigation, suitable 

 to different purposes and sources of supply, and which can all be carried 

 out without expert advice, without expensive machinery, and without 

 specialised labour. 



He authoritatively condemns sub-irrigation by pipes, as distinguished 

 from " underflow irrigation," which consists merely in imitating or re- 

 inforcing the natural drainage of water through the subsoil, and he 

 suggests all the considerations to be taken into account before deciding 

 on any particular form of irrigation work. — M. L. II. 



Ivy and its Uses. By Wm. Chrystal (Garden, No. 1,576, p. 71 ; 

 1/2/1902). — This article points out that, although appreciated as an 

 ornamental plant. Ivy is not nearly so much used or in such a variety of 

 ways, especially in small gardens, as it might be. Some of the positions 

 recommended for its extended planting are under trees where practically 

 nothing else will grow, to clothe large pots, tubs, vases, &c., by the sides 

 of ornamental water, and to form a screen to protect tender plants. 



E. T. C. 



