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2. Urethrae motus retrogressus. There have been instances of bougies being carried up the urethra into the bladder most probably by an inverted motion of this canal; for which some have undergone an operation similar to that for the extraction of a stone. A case is related, in some medical publication, in which a catgut bougie was carried into the bladder, and, after remaining many weeks, was voided piece-meal in a semi-dissolved state. Another case is related of a French officer, who used a leaden bougie; which at length found its way into the bladder, and was, by injecting crude mercury, amalgamated and voided.
In the same manner the infection, from a simple gonorrhoea, is probably carried further along the course of the urethra; and small stones frequently descend some way into the urethra, and are again carried up into the bladder by the inverted action of this canal.
3. Duffus choledochi motus retrogressus. The concretions of bile, called gall-stones, frequently enter the bile-dućt, and give violent pain for some hours; and return again into the gall-bladder, by the retrograde action of this dućt. May not oil be carried up this dućt, when a gall-stone gives great pain, by its retrograde spasmodic action? See Class I. I. 3. 8.
M. M. Opium a grain and half.
Please to insert after line 9, p. 127. Art. Canities, Class I. 2. 2. 1 1. I have lately also inspected a male cat; who is quite black all over, except those parts which appear to have been solded together in the uterus; all which are perfectly white. In both these animals the parts compressed together are so distinétly defined by their colour, that the difference of the curvature and situation of them in the uterus may be nicely discerned: the hinder feet of the cat lay in the arm-pits of the fore-legs, and are white; her fore-legs crossed over the hinder thighs, and left on them a white mark; but the fore-feet, at east the hind part of them, lay under the tail, whence the fore-feet are tipped with white. Where the foetus is less tender, I suppose, this compression in the uterus does not affect it; as dogs and cats are perpetually seen, which are totally black. After line 16, p. 162, Class I. 2. 3. 12. The following extract from a letter of Dr. Beddoes on hydrocephalus internus, is well worthy to be attended to. After line 16, p. 164, Class I. 2, 3, 12. This idea of inflammation preceding hydrocephalus was mentioned by Dr. Quin, and afterwards in a pamphlet of Dr. Paterson, of Dublin.
END OF THE THIRD VOLUME,
T. Bensley, Printer, Bolt Court, Fleet Street, London.