OBSERVATIONS ON THE BLOOD CAPILLARIES IN 



THE CEREBELLAR CORTEX OF NORMAL 



YOUNG ADULT DOMESTIC CATS. 



By Frank S. Aby, Ph.B., M.D. 



With Plate II. 



CONTENTS. 



I. Summary 26 



II. Introductiou 28 



III. Methods 28 



IV. Observations 30 



V. Explanation of Plate 34 



/. Sinnmary. 



First. The pia mater gives off three .sets of blood-vessels. 



A. A set of small arterioles which pass through both 

 molecular and granule layer to the medullary por- 

 tion. 



B. a set of small arterioles which pass through the 



molecular layer into the granule layer. 



C. A set of capillaries into the molecular layer. 

 Second. The granule layer has yi?7/r sources of blood supply. 



I. Recurrent capillaries from arterioles A. 



II. Capillaries from arterioles B. 



III. Anastomosing capillaries from C. 



IV. Capillaries from arterioles A of opposite side of 



lamina. 

 Thiid. The molecular layer has tlirce sources of blood 



supply. 

 I. Collateral capillaries from arterioles A. 

 II. Collateral capillarie.-^ from arterioles B. 

 III. Capillaries C. 



