VOL. XLVII.] PHILOSOPHICAL TRANSACTIONS. jjlfl 



with which curriers bind or swathe their body. This slip knot was passed on the 

 patient's wrists, who had seen nothing of these preparations, and she was bound 

 fest, almost before she was aware of it. Then he introduced a common grooved 

 staff, such as is used for abscesses of the bladder : he turned the groove towards 

 the patient's left thigh, and on this groove he pushed his knife into the bladder. 

 On that knife, which had a groove, he slid the gorget and forceps in the usual 

 manner. 



He searched for the stone in vain, and found nothing but excrescences, one 

 of which was considerably hard : he extracted several clusters of them with the 

 forceps ; yet still he was not very certain but that there might be a stone behind 

 a rampart of excrescences which he telt ; and had not brought the crooked for- 

 ceps with him to search behind this intrenchment. When he judged that the 

 patient was fatigued by his searchings, and the extirpations which he made with 

 the forceps ; he had her put to bed, after having put a canula into the wound, 

 contrary to his usual custom ; for this case required it : these strange bodies 

 were to be removed, if possible; that organ must be injected, and consequently 

 the canula was absolutely necessary. The patient, who bore the operation ex- 

 ceedingly well, was blooded 2 hours after it : she had a pretty good night, and 

 was blooded again the next morning. He left one of his pupils with her, and 

 returned to Rouen. 



The canula, which he left in the wound, was of the common sort, and there- 

 fore too narrow to admit of searching in the diseased part, and to give issue to 

 those excrescences, which we ought to endeavour to disengage and bring away 

 in this treatment ; besides, it is extremely difficult to make the canula remain 

 in the wound. 



As soon as he got to Rouen, he ordered the canula (pi. 6, fig. 6) to be made ; 

 the advantages of which above the old one are : 1 . To afford a wider passage for 

 the substances that are to be evacuated and introduced. 2. To secure the instru- 

 ment in the bladder, by its own structure chiefly, and particularly by the swell- 

 ing at BB. 3. The neck aa, which is at the basis of the swelling, is embraced 

 by the neck of the bladder ; whence the surgeon may be sure how much of the 

 canula enters it : and the openings cc, immediately above the swelling b, are 

 fixed at the lowest part of the bladder. 



Fig. 7, 8, 9, represent the same canula, but for further improvements, for 

 cases which require the evacuation of gross substances, the passage for which 

 cannot be too wide and direct. 



He returned to the patient the next day ; and found her in a fever, with many 

 colicky pains ; but at the end of the 3d day there was nothing extraordinary. 

 He intended to make another search, but he feared renewing those accidents : 

 he therefore contented himself with injecting a liquid digestive ; arid deferred any 



