NOTES AND ABSTRACTS. 



829 



In a note on growing roses in the difficult climate of Long Island, 

 New York, Vice-Admiral Ward gives the following recipe for prevent- 

 ing mildew. The mixture should be applied every ten days from 

 July 20 to September 1, and is said not to stain the leaves of the plant. 

 5 oz. carbonate of copper 

 3 pints ammonia 

 50 galls, water. 



The subjects under discussion at the Conference proper were: — 



1. Synonyms. — M. Guillot, followed by several other speakers, 

 raised the point of the obvious inconvenience of the existence of several 

 names for the same rose, and the Congress eventually passed three 

 resolutions — one calling upon horticulturists in France to proceed to 

 the formation of a good catalogue of all the known synonyms among 

 names of roses; one in the nature of a petition to the raisers of new 

 varieties to choose names as short and as easy for foreigners as possible ; 

 one declaring that it was in the interests of all cultivators that the 

 horticulturists of one nation should respect the names given to the 

 novelties of all other nations, and should not be led even into trans- 

 lating such names in their catalogues, still less into substituting new 

 ones for any they find difficulty in pronouncing. Synonyms will occur, 

 of course, even then, from incomplete information, from naming sports, 

 &c., and some have come down to us from the early days of rose- 

 growing. 



2. The Best Methods of Combating the Diseases of the Rose. — 

 These were divided into — 



(A) Diseases not caused by parasites or of which the cause was 

 uncertain. 



Chlorosis. 



Excrescences and necrosis. 



(B) Diseases caused by vegetable parasites. 



(a) Diseases caused by fungi or bacteria. 



Phragmidium sp. 

 Sphaerotheca pannosa. 

 Botrytis cinerea. 

 Peronospora sparsa. 

 Capnodium sp. 



Leaf spots {Actinonema rosae, Septoria rosae, Pestalozzia 



sp., Cercospora rosicola). 

 Eot of the roots (Armillaria mellea). 



(b) Injuries caused by mosses and lichens. 



(c) The parasitic action of mistletoe and the broomrapes. 



3. The Best Varieties of Rose Placed on the Market in 1907.— A 

 long list, which, if it represents only the pick of the novelties, tells 

 well for the enterprise of the rose-growers of that year. 



4. The Delimitation of the Terms Required to Express the Scale of 

 ' Height in Standard Roses. — A subject which aroused no discussion. 



5. The Particular Influence of Magnesium in the Nourishment of 

 Roses. — The importance of this influence was much insisted on. It 



