122 THE ENGLISH SPARROW. 



groove that separates it into two hemispheres. Behind the cerebrum 

 is the cerebellum, with its large central and two very small lateral 

 lobes. The spinal cord may be traced back to where it leaves the 

 skull through a large opening, the foramen magnum. The cranial 

 nerves will not be demonstrated in this exercise. 



Exercise 8. Draw a dorsal mew of the brain, somewhat enlarged. 



