158 Journal of the Asiatic Society of Bengal. [N.S., XVIII, 
The perfusion and dye-injection experiments of previous 
investigators have failed to detect the essential fact that the 
the kidney (renal venous meshwork) is distinct and separate 
from the network of much finer arterial channels known as the 
intertubular plexus, owing to the non-employment of correct 
relative rates of flow of the fluids in the renal arteries and renal 
afferent veins respectively (Part I). The non-recognition of 
this fact has not only led to wrong individual conclusions but 
has greatly confused the discussion concerning the respective 
functions of the tubules and the encapsulated glomeruli. 
The results of many perfusion experiments confirm and ex- 
tend the results of experiments performed on the kidneys of the 
living animal which indicate that the glomeruli neither filter nor 

