416 On the Cultivation of the Pine Apple. 



disappears. My Gardener has, I have reason to believe, 

 used water of higher temperature than 150° without any 

 injury to the plants ; but as hot water, when applied in the 

 way above-mentioned, will operate according to the com- 

 pound ratio of its quantity and temperature, I would recom- 

 mend the Gardener, when he first uses it, to apply it to a 

 worthless plant, and not to use water of quite so high a 

 temperature as 150°. 



Having some Red Spiders upon the leaves of a Fig tree 

 in the stove, I endeavoured to ascertain the effects of hot 

 water upon these. The first application of it appeared only 

 to render them more alert and active ; a second appeared 

 to have diminished their numbers very considerably, and 

 after a third application I could not discern any. Whether 

 they had died, or marched off only, I am ignorant ; and the 

 period at which I remove my Fig trees into the open air 

 having arrived, I had no further opportunity of trying the 

 experiment. I applied the water to the mature and some- 

 what old leaves only of the Fig trees. 



Note bij the Secretary. 



March 30, 1829. During the last season, several specimens 

 of the fruit of the Pine Apple, managed as above described, 

 were sent to the Society by Mr. Knight. They were all, 

 without exception, of the very best quality in point of flavour ; 

 they were universally destitute of fibre, and in every respect 

 as perfectly grown as any I ever saw of the same size. 



