lii PROCEEDINGS OF THE ROYAL HORTICULTURAL SOCIETY. 



its full development. The quantity applied at the rate of about 

 350 gallons per acre. The most striking results were on the 

 early sorts. The later sorts were freer from the disease. The 

 ' Beading Giant ' plot showed a largely increased quantity in 

 comparison with the adjoining rows, while the superior size, 

 regularity, and quality were very marked. Also the 4 ware,' or 

 selling sizes, were very much more regular. This was no doubt 

 due to the haulm being kept in vigour for five to six weeks after 

 the rest of the haulm in the field had withered. There is no 

 mistake about the great advantage of the solution when applied 

 to this variety ; improved growth was not so marked in other 

 sorts, though certainly very noticeable generally." Prof. Church 

 remarked that the use of the syrup was to make the hydrated 

 oxide of copper more adhesive to the leaves, and he observed that 

 dextrine had been used in conjunction with sulphuretted mixtures 

 for Eoses and Chrysanthemums ; but the special value of sugar 

 was that it entered into combination with the lime, and was 

 subsequently set free, retaining all its adhesive properties. Mr. 

 Blandford added that the use of sugar had been adopted as the 

 best result from a large series of experiments carried out in 

 France. 



Docks attacked by Grubs. — Dr. Masters received a communi- 

 cation from Perthshire together with specimens of grubs which 

 had attacked some Docks. As Khubarb was about to be placed 

 on the same ground, being of the same family (Polygonacese), it 

 was thought the latter might be attacked also. It proved to be 

 the " Ghost Swift," Hepialus humuli ; but, as Mr. Blandford 

 observed, this insect is so very generally distributed that no 

 remedy could be suggested other than the destroying the plants 

 with the grubs as much as possible. 



Walnuts imperfect. — Mr. Noble sent specimens of Walnuts, 

 in which the shell was imperfectly developed in certain places, 

 though the kernels appeared to be sound. It was suggested that 

 the cause might be defective root action from a clay soil, or per- 

 haps the sharp frost in June when they were very young. 



Fog Report. — Some discussion arose as to the desirability of 

 recommencing observations on the injuries to plants by fog 

 during the coming winter, and pursuing them in a systematic way. 

 It is proposed, therefore, to reconsider the programme drawn 

 up in 1891 at the next meeting of the Scientific Committee, 



