lx>V JOrUNAI. OF PROCEEDINGS. 



Mr. Children exhibited specimens of pine-apples from the stove? 

 of Sir John Lubl^ock greatly Infested with Cocci, and which abounded 

 to such a degree as to become a perfect pest, causing the leaves and 

 fruit of the plant to wither, the insects preying upon the fruit whilst 

 in the young state beneath a white downy secretion. Various re- 

 medies were suggested by the members present ; but it was admitted 

 that the difficulty in discovering a suitable remedy was greatly in- 

 creased by the circumstance of the generation of these insects being. 

 from the warmth of the hothouses, continuous, and not annual nor 

 subject to the change of the seasons, as in the outdoor species of 

 the genus. (See p. 206.) 



A4r. Sells recommended the application of an infusion of quassia 

 and tobacco- water ; but Mr. Children mentioned that M. Bouch^ 

 had expressly stated that the Coccus Bromeliee was not affected by 

 the latter. He also mentioned that Dr. Lindley had informed him 

 that the plants would bear the application of warm water to 1 70° 

 without being injured. 



Mr. Ingpen recommended washing the plants with soft-soap water 

 and tobacco-water ; whilst the application of oily matters was espe- 

 cially commented upon by other members. 



The President recommended that the plants when old should be 

 renewed, and recommended the composition given by Mr. Knapp 

 in the ' Journal of a Naturalist.' 



Dr. Horsfield suggested a dilution of turpentine, with sugar and 

 water, a dram of the former with a pint of the latter ; or mixed with 

 gum or some other matter, in order to make it soluble in water. 

 Mr. Sells observed, that a general mixture of the various ingredients 

 might perhaps be most efficacious. 



The consideration of this subject was deferred, but it was recom- 

 mended that it should either form the subject for one of the prize- 

 essays (see announcement of this subject for one of the essays), or 

 that a Committee should be appointed to suggest the most probably 

 efficacious remedies. 



The conclusion of Mr. Templeton's memoir upon Mauritian Crusr 

 tacea was read. 



August 3rd, 1835. 



James F. Stephens, Esq., Vice-President, in the Cliair. 



Donations. 



l^he Bridgewater Treatise upon Natural History, 2 vols. By the 

 Rev. W. Kirby, M.A., Honorary President of the Society, the Au- 

 thor thereof. 



