ON THE PROBABLE FUTURE APPLICATIONS OF THE 
PRECEDING FACTS. 
The application of the closed cases to the illus- 
tration of physiological and pathological botany, 
must be sufficiently obvious to all who are inter- 
ested in such enquiries. In most of the experi- 
ments which have been hitherto undertaken by 
vegetable physiologists, the results have been ren- 
dered liable to some doubt, in consequence of the 
fancied necessity for the open exposure of the 
plants to air, whereas now the utmost certainty is 
attainable. 
