[15] Medico-Chirurgical Transactions, vol. xii.
[16] Medical and Physical Journal, vol. lvi.
[17] London Medical Gazette.
[18] This remark I have had opportunities of verifying in cases, where needles have been introduced under varicose veins in the lower extremities, and allowed to remain, with a ligature around them, for ten days or a fortnight. The circulation through the vein will in such cases be obstructed; but, in a year or two, will be found to have become completely re-established.
[19] Medico-Chirurgical Transactions, vol. xii.
[20] Dance. Archives Générales de Méd. vol. xviii, p. 480, Dec. 1828.
[21] In cases where pus has been found in veins surrounded by coagula, its presence and detention there have been differently accounted for. M. Cruveilhier appears to have imagined that the loose coagula act as filters, through which the blood passes, while the pus is retained. (Dict. de Méd. et de Chir. t. xii, p. 641.) The true explanation of the way in which coagula form round pus in the veins has already been given.
[22] See M. Gaspard's experiments.
[23] Dr. Lee. Medico-Chirurgical Transactions.
[24] Précis Elémentaire de Physiologie, t. ii, p. 389.