





Of Vegetation. 



\ 



344 



(Fig. 44.) reprefents the fliape and foe 

 of a young Fig-leaf, when firft marked 

 with red points, % inch diftance from each 

 other. 



(Fig. 45,) reprefents the fame full grown 

 leaf, and the numbers anfwer to the corre- 

 fponding numbers in the young leaf : 

 Whereby may be Cccn how the feveral points 

 of the growing leaf were feparated from 

 each other, and in what proportion, viz. 

 from a quarter of an inch, to about three 

 quarter's of an inch diftance. 



In this Experiment we may obferve that 

 the growth and expanfion of the leaves is 

 owing to the dilatation of the veficles in 

 every part, as the growth of a young moot 

 was fhewn to be owing to the fame caufe 

 in the foregoing Experiment 8 ; and doubt- 

 lefs the cafe is the fame in all fruits. 



If thefe Experiments on leaves were fur- 

 ther purfued, there might probably be many 

 curious obfervations made in relation to 

 the fhape of leaves : By obferving the dif- 

 ference of the progreffive and lateral motions 

 of thefe points in different leaves, that were 

 of very different lengths in proportion to 



their breadths. 



That 









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