Towards the completion of its growth a more or less prominent ring of bone, termed the burr or coronet, is deposited at its base just above the junction with the pedicle; this ring tending to constrict the blood-vessels, and thus cut off the supply of blood from the antlers...
The breath was dry and hot and the heart constricted painfully.
_ In this case use is made of a glass tube with constricted lower end.