Haec si, inquam, attuleris, Fabulle noster, Caenabis bene: nam tui Catulli Plenus sacculus est aranearum.
"Lucasta"
Richard Lovelace
The most depending part of the bladder is that where lithic concretions take place; and if a sacculus exist here, this, becoming a recipient for the matter, will favour the formation of stone.
"Surgical Anatomy"
Joseph Maclise