SECT. XXV. ASHES. 465 



A thousand parts of dried leaves of the Oak 

 gathered in May contained 53 parts of ashes ; of the 

 Rhododendrum jerrugineum, 30. 



A thousand parts of the leaves of the JEsculus 

 Hypo cast anum gathered in May yielded 72 parts 

 of ashes ; of the trunk and branches, 35. 



A thousand parts of the leaves of the same plant 

 gathered in September, 86 parts of ashes ; the fruit 

 gathered in October, 34. 



A thousand parts of the dried bark of the Oak 

 contained 60 parts of ashes ; of the alburnum, four; 

 of the wood, two. 



A thousand parts of the leaves of the Oak gathered 

 in May yielded in the green state 13 parts of ashes, 

 dried, 5S. The Same leaves gathered in September 

 yielded in their green state 24 parts of ashes, 

 dried, 55. 



A thousand parts of the Pisum sativum in flower 

 yielded Q5 parts of ashes ; when in fruit, only 81. 



A thousand parts of the Vicca faba yielded be- 

 fore flowering 16 parts of ashes in their green state, 

 and 8Q5 parts of water of vegetation ; when in 

 flower they contained 20 parts of ashes and 876 of 

 water of vegetation. 



Such are the proportions in which plants, when 

 decomposed by combustion, yield ashes, as far as 

 these proportions have been ascertained by the 

 experiments of Saussure. But a more, important 

 subject of inquiry is the analysis of the ashes them- Composi- 

 selves, with a view to the discovery of the ingre- 



VOL. I. 2 H 



