8 4 



" Carrierei " were found (as far as these particular experiments went) 

 to be completely immune. E. nanus proved to be practically immune 

 when uninjured leaves were inoculated. 



The question of the best means of combating the disease has 

 been considered under £< preventive measures " in the preceding note 

 by Mr. Massee who has also drawn attention to the desirability of 

 picking and destroying the infected leaves during the winter season 

 and so prevent a renewal of the disease in the spring. The fungus 

 is so conspicuous that the affected leaves can be easily recognised 

 and if collected and burned the disease would be reduced in pro- 

 portion to the number of badly diseased leaves thus get rid of. 



Commencing about the middle of March of each year, Mr. 

 Massee suggests that the plants be sprayed with a solution of sulphide 

 of potassium (livers of sulphur), — two ounces dissolved in three 

 gallons of water. When the new leaves are very young the solution 

 might be of lower strength, viz., one ounce to two gallons of water. 

 It is important that the spraying be continued at intervals of ten 

 days for two months in order to be thoroughly effective.* In Italy a 

 fungicide (cupric sulphur), containing flowers of sulphur, to 

 which three per cent, of copper sulphate has been added, has been 

 found effective, as even in the most serious cases the repeated 

 application of this solution has restored the vegetative growth of the 

 plant to a satisfactory condition. In cases where the plants have been 

 perceptibly weakened by the attacks of the disease a small dose of 

 nitrate of soda should be given to the soil. Plants of Euonymus 

 growing under shade and very badly attacked might be replaced 

 by other plants, in order to lessen the risk of spreading the infection. 



he remarks which I had the honour of presenting upon the above 



1 subject before the Geological Section of the Society on a past 

 occasion were of a rather discursive nature, designed to illus- 

 trate some salient points of the enquiry and especially such as could 

 be exemplified in local or readily accessible instances. This latter- 

 precaution it is as well to keep in front in the present paper, and 

 fortunately Bournemouth is situated in the centre of some of the 

 most striking features connected with the subject. But it is well to 

 present this, or so much of it as can be treated within the limits of 

 a few pages, in a more connected form, and I am much obliged to 

 the Council for the opportunity of doing so. 



* Where any difficulty is experienced in obtaining a supply of sulphide of potassium it 

 may be ordered from Walter v 0 ss & Co., Ltd., Mill wall, London, E., at the rate of one 

 pound, f red by post, for 1/8. 



Notes on River-courses in the South 

 of England. 



By H. St. Barbe. 



