These fragments have often adhering shells attached to them, and have been bored by Perforating mollusca.
"The Student's Elements of Geology"
Sir Charles Lyell
Floating wood, containing Perforating shells, such as Pholas and Gastrochoena, occur.
"The Student's Elements of Geology"
Sir Charles Lyell
The neck of the womb is longer, is often tortuous in its course, and its walls so approximated to each other and so rigid that it may be all but impossible to follow it, and there is always danger of Perforating its walls and opening into the cavity of the abdomen, or, short of that, of causing inflammation and a new, rigid, fibrous formation which on healing leaves matters worse than before.
"Special Report on Diseases of Cattle"
U.S. Department of Agriculture J.R. Mohler