544 JOUKXAL OF THE ROYAL HORTICULTUEAL SOCIETY. 



Disa Hybrids [Orch, Bev. p. 273, Sept. 1901).— The numerous hybri(T 

 Disas, Avith their parentage and other particulars, are gone into at lengtli.. 

 —H. J. C. 



Diseae, Monog-raph of the. By R. Schlechter (Engl Bot. 

 Jalirh. xxxi. pp. 134-288, tt. i.-vi. ; IG 8/1901). — A systematic revision 

 of the genera Satyrium, Bachites, Disa, Schizodium and Brotcnleca,. 

 which the author regards as comprising the group Disece, — A. B. B. 



Disease, The So-called Little Peach" (Agr. Gaz. N.S W. vol. xii. 

 Part 6, p. 745). — During the last two seasons much trouble has been, 

 caused in several Peach-growing districts of the United States by a 

 peculiar disease in Peaches called, in the absence of any knowledge as to its 

 cause, " Little Peach." The fruit upon affected trees does not attain a size 

 greater than a pigeon's egg, and, as a rule, the tree dies within the season. 

 Professor Waite, as well as Professor Stewart, of the New York State' 

 Agricultural Experiment Station, has been investigating the disease, but 

 has not yet been able to determine the cause of it. It is said to spread 

 rather rapidly. I^p to the present, the only remedy that can be recom- 

 mended is to root up and burn the trees as early as possible after the 

 disease is first discovered in them. — A. W. S. 



Dragon-tree of Teneriffe. By John Low, M.D., F.L.S. (Garcia 

 p. 67, 27 7 1901 ; tig. ; con. p. 79, 3/8/1901). — Giving interesting par- 

 ticulars as to age and dimensions of this wonderful tree. Continued 

 p. 78, 3/9/1901.- //. /. C. 



Droseras. By H. L. Harrow {Gard Mag. 2,495, p. 543 ; 24/8 1901). 

 — -The species of Droscra (Sundew) in cultivation are described by the 

 writer, who adds good practical notes on their cultivation. An illustration 

 is given of D. ramentacea. — W. G. 



Education in Ag'riculture and Horticulture. By Rev. W. 

 Simms [Jour. Imj:). Bej). Agr. W.I. vol. i. No. 1, p. 77). — A paper of the 

 utmost value and suggestiveness, which, with the discussion which followed 

 it, should be read by everyone interested in the introduction of such 

 teaching into our English primary and secondary schools. It is imme- 

 diately followed by papers by Prof. d'Albuquerque and M. W. Fawcett on 

 science teaching in colleges and in schools, which are equally valuable and 

 suggestive. See also vol. i. Xo. 3 and vol ii. No. 1, p. 56. — TT'. TT'. 



Elm-leaf Beetle. By C. Clarke, City Forester, Northampton, 

 Mass. [Amcr. Gard. xii. p. 568, 17/ 8 1901). — The result of five years" 

 experience with this pest shows that it can be exterminated by spraying 

 the foliage, as soon as the leaves are formed in the spring, with arsenate 

 of lead. Old trees should be sprayed twice, once in the spring, and again 

 in the early summer. The trees should also be sprayed two years in 

 succession to gain the best results. — C. C. H. 



Elm-leaf Beetle, The. By J. M. Southwick {U.S.A. St. Bd. Agr, 

 Bliode Is. Bull. 12, -July 1901, pp. 1-12, pi.). — A description and plate of 



