As this bacillus vegetates and increases in numbers it excretes substances which act as irritants and poisons and which lead to the formation of a small nodule, called a tubercle, at the point of irritation.
"Special Report on Diseases of Cattle"
U.S. Department of Agriculture J.R. Mohler
His physical structure uses and excretes energy so rapidly that he cannot store it up and go to sleep on his savings, and his harvests are usually so lean and disconnected that the exercise of thrift is equally an impossibility and a mockery.
"Mary, Mary"
James Stephens Commentator: Padraic Colum
It protects the delicate structures which it covers, assists in the regulation of the temperature of the body, and excretes waste products.
"The Prospective Mother A Handbook for Women During Pregnancy"
J. Morris Slemons