744 



Flowering of Fruit Trees. 



[march, 



the trees should also be sprayed in spring with paraffin emulsion 

 and liver of sulphur. Much good may be done by spraying 

 in winter with paraffin emulsion, care being taken that the 

 buds are reached with the spray. 



Beech coccus (Leaflet No. 140) has been reported from 

 Tunbridge Wells and Cirencester, and the Wood Leopard Moth 

 {Zeuzera aesculi) from Tiptree, Essex (see Leaflet No. 60). 



Fungi. — Rose mildew, which has been reported from Burnley, 

 is caused by the fungus Sphaerotheca pannosa, Lev. (See 

 Journal, September, 1907, p. 357.) The bushes should be 

 sprayed with a solution of one part pure sulphuric acid in 

 1,000 of water or 1 lb. to 100 gallons. If the foliage is very 

 young and soft, double the quantity of water should be used. 



Specimens of diseased potatoes received from Hounslow 

 showed a dark ring on the potato being cut, which spoiled 

 them jfor cooking purposes. This was found to be due 

 to the presence of fungus mycelium in the elements of the 

 vascular ring of the tubers. Such diseased tubers should never 

 be used as "seed," but might be boiled and fed to pigs or poultry. 



Diseased Hawthorn Hedge. — A case was reported where a 

 considerable length of hedge was destroyed by the lichen, 

 Evernia prunastri, L. This lichen can be eradicated by 

 spraying with Bordeaux mixture. The work can be done most 

 effectually before the leaves appear in the spring. Dusting 

 with dry quick-lime before the foliage has expanded will also 

 destroy the lichen, but it is not so effective as Bordeaux mixture. 



Other specimens included black currant bushes affected 

 with coral spot disease (Leaflet No. 115), from Ilminster 

 (Somerset), and apple twigs from Swanage showing minute 

 red specks, the fruit of Nectria ditissima, Pul., the fungus 

 causing apple tree canker (see Leaflet No. 56). 



In a paper read before the Royal Statistical Society in January, 



1907, Mr. R. H. Hooker drew attention to the correlation of the 



weather and the crops, and pointed out 



Relation between the x . , * 



m , , that an examination of the meteoro- 



Weather and the , , , - ... x . , , , , 



_ m logical statistics and of the returns 01 



Flowering of Fruit- , , , , . 



j YeQS the produce of crops suggested that the 



yield was influenced not merely by the 



character of the weather during the later stages of growth, 



