Phihsopltical Transaction^. 373 



8. On iJie Re-establishncnt of a Canal, in the place of a portion 

 of the Urethra, which had been destroyed. By Henry Earle, 

 Esq. Surgeon to the Foundling, &.C. 



The details of this paper are too purely surgical to admit of 

 being quoted at length 'in this Journal, at the same time they 

 lead'to the demonstration of a carious and important physiolo- 

 gical fact, and upon that ground the communication has pro- 

 bably been admitted into the Philosophical Transactions. 



9. Calculations of some observations of the Solar Eclipse of the 



1th September, 1820, By Mr. Charles Rumker. 



The details of this paper scarcely admit of abridgment. 



10. An Account of the Remeasurementofthe Cube Cylindcrand 

 Sphere used by the lafe Sir George Shuckburgh Evelyn, in 

 his Inquiries respecting a Standard of Weights and Measures. 

 By Captain Henry Kater, F.R.S. 



Sir G. S. Evelyn's experiments, adverted to in the title of this 

 paper, are detailed in the Phil. Trans, of 1798, and though he 

 bestowed the greatest attention on those parts of the inquiry re- 

 lating to the weight of the solids, their measurement was not 

 so accurately performed; Captain Kater therefore was anxious 

 to re-investigate the latter subject, previous to the final report 

 of the Commissioners of Weights and Measures. 



In this paper, Captain Kater describes the state of the 

 apparatus, and the means which he adopted in effecting 

 their measurement. The mean result of the measurement of 

 three sides of the cube gives for its contents 124.1969 inches. 



The length of the cylinder, deduced from three means, is 

 5.9960 inches. 



In the original measurement of the sphere, a brass square 

 was employed, the side of which was a little larger than the 

 diameter. The sphere being properly placed and supported 

 within the square, a micrometer screw, which passed through 

 one of the sides of the square, was brought in contact with the 

 diameter of the sphere, and the reading of the micrometer head 

 noted; the sphere being then removed, a brass ruler, of known 

 length, was put into its place, and the micrometer screw being 

 brought in contact with the end of the ruler, the dilference be- 

 tween its length and the diameter of the sphere was obtained, 

 from which the latter was determined. 



Captain Kater details at length the repetition of Sir George's 

 measurements, whence it appears that the excess of the diame- 

 ter of the sphere above the length of the ruler gives 0.0012281 

 inches. The author theii proceeded to measure tlic bras.s ruler. 



