314 PROPORTIONS 



7. Horse Chestnut (.^sculus hippocasianum) , 



Sap wood ue&r « Hetri wood. WikkI oC liinbi. Bark of lirabA. Ouuide bark Inside bark 



the heart. of the trunk. ot the trunk. 



47.60 5805 23-70 3625 1735 44-35 



52-60 41-95 76-30 63-75 83-65 55-65 



0-62 1-60 1-15 3-50 10-00 5-00 



Limbs of the iEsculus hippocastanum {same tree), at different stages. 

 I. April 26. Limbi taken about two inchei in diameter. Buds just bursting. 



Bark. Wood. 



Water ...... 51-00 56-13 



Dr)' matter 49-00 43-87 



Ash 500 0-51 



Ash calculated on the dry matter - 10-204 1-162 S. 



2. May 29. Limbs about two inches in diameter. Flowers just fallen. 



Wood. Bark. 



Water 48-03 53-50 



Dry matter 51-97 46-50 



Ash 0-58 4-29 



Ash calculated on the dry matter • 1*116 9-226 S. 



The two following analyses exhibit a difference in the amount of ash and dry matter in 

 the leaves of two Horse Chestnut trees growing on the same soil, and subjected as nearly 

 as they could well be to the same conditions. There was also much difference in the ap- 

 pearance of the bark, flowers, and shape of the leaves in the two trees. The leaves were 

 gathered May 18th, when the trees were in full bloom ; and the middle leaflet of equally 

 vigorous leaves from each tree was selected for analysis. 



No. 1. The middle leaflet weighed 57*5 grains, and gave 



Actual quantities Per centum- 



Water 41-19 71-633 



Dry matter 16-31 28-367 



Ash 1-33 2-313 



Ash calculated on the dry matter - 8-157 S. 



No. 2. The middle leaflet weighed 77-25 grains, and gave 



Actual quantities Per centum. 



Water 55-40 71-715 



Dry matter 21-75 28 285 



Ash 1-58 2-045 



Ash calculated on the dry matter - 7-264 S. 



The leaves of No. 2 are much l.irger (the leaflets being wider and longer) than those of 



No. 1. 



