B12 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



history of which is not fnlly known ; investigations concerning it are in 

 progress. A large number of insects are known to attack the plant, and 

 descriptions and figures of many of these are given. The bulletin con- 

 cludes with descriptions of a number of weeds found growing in cranberry 

 bogs, with means to be adopted for their eradication. — F. J. C. 



Crane Fly. or Daddy Long-legs. By R. X. 3 :~ron. 

 No. 943, p. 34. figs. 16 to 21, Jan. 1. 1905).— The habits and customs of 

 this very common and most destructive pest are fully dealt with in this 

 very interesting paper. Rooks and black-headed gulls are shown to be 

 among their deadly enemies. — G. S. S. 



Crinum podophyllum. By H. Baum (Die GarL No. 2. p. 26. 

 Oct. 8, 1905). — A native of Central Africa, where it grows at an altitude 

 of 1,000 metres (about 3,300 feet) above sea, in shaiy position in humus. 

 The pretty flowers are large, pure white. It is easily cultivated as a 

 stove plant. — G. R. 



Crown-gall Disease. The Wrapping of Apple Grafts, and its 

 Relation to. By Hermann von Schrenk and George G. Hedgcock 

 [U.S.A. Dep. Agr. Bull. 100, Part 2; Feb. 28, 1906).— The crown-gaU 

 disease of apple trees usually appears at or near the union of the scion 

 and root-piece. 



Protection of the graft at the union will serve to induce a better 

 union, and may also aid in keeping out disturbing factors. 



Grafts wrapped with cbth and with rubber yielded 85'1 per cent, 

 and 86*5 per cent, of smooth trees respectively. 



It is recommended that apple grafts be wrapped with cloth or 

 rubber.— If. C. C. 



Cucumber and Melon Diseases, Spraying for. By w. A. Orton 

 {U.S.A. Dep. Agr. Farm. Bull. 231. 1905 ; 8 figs.). — Descriptions of the 

 downy mildew {Peronoplasmopara cubensis Clint.), leaf blight (Alternaria 

 brassic<z nigrescens Pegl.), anthracnose (Colletotrkhum lagenarium Ell. 

 & Mart.) and of some other leaf diseases are given, as well as wilt, one 

 form of which is attributed to Bacillus tracheiphilus Erw. Sm., and 

 another form to Xeocosmospora vasinfecta, var. nivca. A resume of the 

 results of spraying experiments is given, and for the majority of the leaf 

 diseases spraying with Bordeaux mixture (copper sulphate 3 lbs., quick- 

 lime 6 lbs., water 50 gals.) is recDmmended, and the fact that there can be 

 no danger to the consumers of the fruit from eating the exceedingly small 

 quantity of copper which finds its way on to the fruit is insisted upon. 

 For the powdery mildew caused by ErysipJie Polygoni evaporation of 

 sulphur by placing flowers of sulphur on the water-pipes is recommended. 



F.J.C. 



Cycas Mieholitzii. By W. T. Thiselton-Dyer. (Gard. Chron. No. 

 973, p. 142, figs. 48 & 49 *: Aug. 19, 1905 1.— This curious Cycad was 

 discovered in Annam by Mr. W. Micholitz. A glance at the M figures will 

 show that the striking and remarkable feature of the new species is the 

 repeated dichotomy of the leaf pinnules/' A botanical description is given 

 in Latin. — G. S. S. 



