436 On the Effects of Heat and Moisture on Vegetation. 



These facts have been stated with a view to excite atten- 

 tion to the subject. The practical results likely to follow an 

 accurate investigation appear to me to be interesting to the 

 gardener and to the man of science. The Horticultural 

 Society possesses sufficient influence and means to promote 

 this enquiry on an extended scale, if so inclined ; I shall feel 

 happy in contributing my feeble assistance towards any inves- 

 tigation that may lead to the elucidation of the economy of 

 vegetation. 



To attain the object proposed, similar registers should be 

 kept in different parts of the island, the observations to be 

 taken exactly in the same manner, and with the same descrip- 

 tion of instruments ; each observer noting carefully the pro- 

 gress of vegetation in certain plants, especially their times of 

 flowering and ripening the seeds. The plants submitted to 

 the experiments should also be cultivated in open situations, 

 on soils and subsoils as nearly similar as possible, or if not, 

 the difference should be noted. 



I have the honour to be, most respectfully, 

 Sir, 



your very humble Servant, 



Archibald Gorrie. 



Annat Garden, near Inchture, Perthshire, 

 December 22nd, 1825. 



