has now identified the same fungus as Credo vitis, Thiim., and he has 

 furnished the following not.- -Mn- the hi-tory of its occurrence : — 



" Uredo W//.-J. Tliiinicn. Die Pilze des Weiustockes, p. 182, tab. 5, 

 fig. 10 (187S), was described from specimens parasitic on living leaves 

 of lift's linifera from Aiken, S. Carolina, collected by H. W. Ravenel. 

 Specimens of this fungus were sent to the Eev. M. J. Berkeley in 1879 

 from Jamaica by Mr. D. Morris, at that time Director of the Botanic 

 Gardens in Jamaica. The fungus now sent by Mr. T. D. A. Cockerell 

 to Kew from Jamaica, and determined by Mr. B. J. Galloway, of the 

 United States Department of Agriculture, to be Credo Halts, Lag., proves 

 to be identical with I'rtdo r/'fis, Thiim.. as proved bv comparison with a 

 portion of Thiimen'stype specimen, now in the Kew Herbarium. The 

 type of Lagerheim's species, Credo Viala-, was collected near Kingston, 

 Jamaica, and is undoubtedly synonymous with C. rifts. Thiim., the some- 

 wlui! imperfect description of the latter having led to tin 1 founding of a 

 second species. The aeudial form of the fungus is mixed with the uredo- 

 form in Mr. Morris's specimens." A treatment for this disease in vines 

 might be devised as already recommended in the ease of the coffee disease. 

 Jn the younger stages of the disease it would be found useful to du*1 the 

 growing leaves, as well as the surface of the -oil. at frequent interval- 

 with, sulphur, or a mixture of sulphur and lime. When the orange- 

 yellow spores are already developed any remedial treatment then is 

 practically useless. The "leaves should, however, be carefully collected 

 and burnt, in order to lessen the danger of the fungus spreading to other 



Tropical Agriculture. — An introductory Text Book of Tropieal 



Agriculture lias been published by Messrs. Macmillan & Co. from :he 

 pen of Dr. H. A. Alford Nicho'ls. M.I).. F.L.S., of Dominica. It is 

 a crown octavo volume of 312 pages, the published price being 6s. 

 per copy. This is practically the English edition of a work tha 

 uhtaine.fthe premium of 100/. offered bv the Government of Jamaica 

 Iruns first of all published at the Government Printing Office »t 

 Jamaica, and adopted as a text book for the use of the colleges a<d 

 higher schools in that Colony. It has ^\wcr ben adopted by t>ie 

 (Jovernment of other colonies, and it is cvi«i> t.;. a- stated by the ;.uth'i'i 

 " that it has supplied a distinct want." The first part deals with the 

 elementary principles of tropical agriculture connected with n conshera- 



irrigation, tillage operations, pruning, budding, and grafting. I» the 

 second part the application of these principles to the various cultivaions 

 undertaken in tropical countries is considered, and useful hints given 

 respecting coffee, cocoa, tea, sugar-cane, fruits, spices, drugs, and tood 



Ferns of South Africa.— Mr. T. B. Sim, Curator of the Botanic 



Garden of King William'- Town, has just published a haidhook of the 



Fems and Fern AUi, so!' South Africa. Ir < .mains descriptions of all the 



in number, which are known to occur soutb of the tropic of 



