Enquire within upon everything by Robert Kemp Philp

845. Quantity Removed.

Leeches are supposed to abstract about two drachms of blood, or six leeches draw about an ounce; but this is independent of the bleeding after they have come off, and more blood generally flows then than during the time they are sucking. The total amount of blood drawn and subsequently lost by each leech-bite, is nearly half an ounce.