VOL. VIII.] PHILOSOPHICAL TRANSACTIONS. 115 



to have known it before I discovered it: which was the same year acknowledged 

 in print by those of France. But I do not pretend to have been the first that 

 did ever find a straight hne equal to a crooked. For I very well know, 

 that Mr. William Neil had, the year before, found out and demonstrated, how 

 to construct a crooked line so as to be equal to a straight, by a certain series of 

 numbers after the method of Dr. Wallis. And though he did not therein de- 

 monstrate the other properties of that line; yet the same were presently after 

 demonstrated by myself and others, and the nature of the line fully discovered, 

 being a certain paraboloid. And that which M. Heuraet is said afterwards to 

 have found out, in the year 1659, andM. Fermat in the year 1660, are but the 

 same with that of Mr. Neil. 



^n Account of a Booh. N° 98, p. 6l51. viz. 



De Corpore Animato Libri quatuor, seu promotae per Experimenta Philo- 

 sophiag Specimen alterum; Auth. Johanne Baptista Du Hamel P. S. L. Par. 

 1673, in 12mo. 



A work for the most part metaphysical ; and though written with great learn- 

 ing, yet superseded by the essays of later writers on these subjects. 



Of Stones in the Bladder, By Mr. Chr. Kirkhy. N° 99, p. 6l55. 



Although I find, in Numb. 26, of your Phil. Trans, an account of 96 stones 

 taken out of one bladder; yet I hope this of 38 stones will not be unacceptable, 

 since several of them were large, and of the lesser sort some were triangular and 

 quadrangular; their flats worn to a great smoothness, and thetr corners blunted. 

 The greatest stone w^eighed 206 grains; the least 3 grains; and all the 38 

 weighed 4-|- ounces. The matter of the stones is very compact, and like white 

 clay; and though the several coats may be discerned in one of them which I 

 broke, yet they are not easily separable. But what I wonder at most is, that in 

 the dissection of the kidneys and ureters, not any sign of stone or gravel was to 

 be found. 



The following is the Relation as made by Casparus JVendland, Surgeon of Dantzic, 



Translated from the German. 



Mr. John Braun, a gentleman of 71 years of age, being dead, I was desired 

 to open his body, to see whether we could find the cause of the excessive pains 

 he had endured, for two years and a half, in the penis, with a continual cutting, 

 burning, and pressing of his urine, coming from him drop by drop; until at last 

 it came to a constant endeavour of going to stool and of making water^ which, 



q2 



