Tbt SAP in 7REES. 7 



MARCH 8. 



Thermometer, at noon, 44. ; at midnight, 35. 

 THE loweft incifion upon the tree was moift in the wood, as 



on March 5. but the bark was dry, and no moifture appeared 



in any of the upper incifions. 



EXPERIMENT i. This day, I cut the extremities of one of 

 the branches. Both wood and bark were dry as formerly; 

 but the fap ifTued vifibly between the wood and bark. It 

 flood in finall globules, but was not fufficient to form any 

 drop. 



COROLLARY i. Here it appears, as it did on feveral other oc- 

 cafions, that the fap rifes between the wood and the bark to 

 the extremities of the branches, before it reaches thofe parts 

 either by the wood or the bark ; yet it is denied by 

 Dr GREW and M. BONNET, that the fap ever afcends at all 

 between the wood and the bark. 



MARCH 9. 

 Thermometer, at noon, 45. ; at midnight, 38. 



MARCH i o. 



Thermometer, at noon, 46. ; at midnight, 40. 

 LITTLE farther change was obferved on thefe days ; only the 

 loweft incifion upon the tree was more moift than formerly, and 

 the fecond incifion, a foot higher, began likewife to appear moift. 

 The fap alfo between the wood and the bark in the young 

 branches was ftill more vifible, while the wood and bark them- 

 felves were dry. 



MARCH 11. 



Thermometer, at noon, 49. ; at midnight, 44. 

 THIS day, the loweft incifion upon the tree at the ground, and 

 the fecond, a foot above it, did, for the firft time, begin to bleed. 

 The third incifion was only moift, and all above it were dry, as 



formerly, 



