36 FISTULA AND POLL-EVIL 
The afferent vessels empty directly into the 
thoracic duct. 
The prescapular glands receive afferent ves- 
sels from the skin of the anterior part of the 
withers and also from the superficial muscles 
of the neck. The afferent vessels lead to the 
posterior cervical nodes and thence to the tho- 
racic duct. 
