30 



CHLOROPHYLL 



duced. As these rays of short length are not found in sunhght, 

 the process that goes on in the laboratory is not the same that 



Fig. 8. Erect shoot of Norway Maple, Acer platanoides, viewed from the side 

 and from above; showing the horizontal display of the leaves to catch the 



most sunlight. Kerner. 



goes on in the plant — if it goes on. It was then further dis- 

 covered that certain pigments such as methyl orange, when 

 added to the mixture of water and carbon dioxide, acted like 



