PROCEEDINGS 



OF THE 



HORTICULTURAL SOCIETY OF LONDON, 



1841. 



No. XVII. 



December 6, 1841. 



GARDEN COMMITTEE. 



The following reports were laid before the Committee ; 



Hardy Department. — The Superintendent reported that he had 

 tried several experiments with Guano upon plants in pots. In 

 loam, containing one fiftieth part of this substance, Verbenas 

 and Salvias became luxuriant in about the same degree as if 

 potted in rotten dung. The same plants also flourished exceed- 

 ingly in sand containing a similar proportion of Guano. The same 

 effect or even a more beneficial action was produced upon them 

 when peat w^as substituted for sand. But when rich garden soil 

 was employed with the same proportion of Guano, the plants 

 became languid and died. It was therefore inferred that the 

 value of Guano as a manure will depend upon the soil with 

 which it is employed, and that a quantity which would be highly 

 beneficial in poor barren soil will become deleterious if employed 

 in land previously rich and well manured. 



The following were stated to be the results of manuring plants 

 with Nitrate of Soda. 



In February, 1841, some old worn out garden Roses, had a- 

 portion of this salt applied to them, at the rate of one cwt. 



a 



