302 Royal Society. 



that case are their ratios also when the particles move with any velocities, 

 for otherwise they would be functions of the velocities and not of the po- 

 sitions only. The last equation (\|/) therefore gives the necessary relation 

 between the distances and central forces of five moving particles." 



On this we make no comment, nor on the conclusion that " when 

 the number of spheres exceeds ten the number of equations is more 

 than sufficient to determine the law of force, and no law of force is 

 possible but that which varies directly as the distance." We shall 

 merely remark, in justification of this notice, that a writer who is 

 capable of the independent deduction of the relation existing among 

 the distances of five points in space, is one whose errors are worth 

 recording. 



XXXVIII. Proceedings of Learned Societies. 



ROYAL SOCIETY. 



[Continued from p. 230.] 



March 14, f\N so-called Chylous Urine. By Ei. Bence Jones, 

 1850. V^ MJXj AJ yr t; RR g &c 



The definition given of chylous urine is, that it is urine which is 

 white from the suspension of fatty matter in it. An opportunity of 

 observing a case of this disease having occurred to the author, he 

 was led to make the experiments described in this paper. A harness- 

 maker, age 32, half-caste, who had lived in London for twelve years, 

 had been passing such water for nine months. On examination of 

 the water made at 2 p.m. it solidified, looking like blanc-mange in 

 ten minutes. It was very feebly acid, contained fibrine, albumen, 

 blood-globules and fat; specific gravity =1015. 1000 grs. of this 

 urine gave — 



44*42 grs. total solid residue 

 8*01 grs. total ash. 

 14*03 grs. albumen. 

 8*37 grs. fat. 

 13*26 grs. urea and extractive matter. 

 •75 gr. loss. 

 955*58 grs. water. 



In order to watch the variations produced by food and exercise 

 in the appearance of the urine, every time the urine was made, for 

 five days and nights it was passed into bottles marked with the hour. 

 From these observations, and more particularly from the third, fourth, 

 and sixth days, it was evident that the fibrine and albumen appear in 

 the urine when no fat is there, and that the albuminous urine occurs 

 before food has been taken, and disappears during the night with 

 perfect rest. Thus the fourth day, at 7 h 15 m a.m., on first getting 

 up the urine contained the slightest trace of albumen. The specific 

 gravity =1027; the precipitate by alcohol =0*8 gr. per 1000 grs. 

 urine. 



At 9 h 50 m a.m., just before breakfast, the urine formed a solid 

 coagulum free from fatty matter, but contained a visible deposit of 



