VOL. XXXV.] PHILOSOPHICAL TRANSACTIONS. 203 



great width ; since nature is often able of herself to dilate the very parts in dis- 

 pute to a very extraordinary degree; and since this very operation here proposed 

 has been successfully performed three times on the same person : therefore 

 artificial fistulas in males, and the urethra of females may be dilated, so as to 

 extract any stone without cutting the body of the bladder, or lacerating any of 

 the parts. 



The Conclusion of Dr. Desaguliers" Account of Mr. Hales's Fegetable Statichs. 

 N° 399, p. 323. 



See note relative to the former part of this account at p. 191, of this vol. 

 of these abridgments. 



A Solar Eclipse, observed at Lisbon, Sept. 25, 1726, N. S. By Father Carbone, 

 a Jesuit. N" 400, p. 335. From the Latin. 



At 3*^ 59"" 50^ apparent time, the moon's limb touched that of the sun. 



4 38 57 just 6 digits were eclipsed. 



4 58 30 the greatest obscuration, 7 dig. 45'. 



5 56 50 end of the eclipse. 



A Lunar Eclipse observed at Lisbon, Oct. 10, 1726, N. S. By the same. 

 N° 400, p. 338. From the Latin. 



0' apparent time, a sensible penumbra. 

 20 the earth's shadow touched the moon's limb. 



4 6 digits were eclipsed. 

 25 greatest obscuration, 6 dig. lO'. 

 30 end of the true eclipse. 



O end of the penumbra. 



Remarks on some Experiments in Hydraulics, which seem to prove that the Forces 

 of equal moving Bodies are as the Squares of their Felocities. By Mr. John 

 Fames, F. R. S. N° 400, p. 343. 



The result of these experiments is, that the velocities of any fluid, for in- 

 stance water, issuing out at equal orifices made in the sides of tubes, or vessels 

 filled up to difl^erent heights, and kept full at those heights, above the orifices, 

 are found to be as the square roots of those heights respectively. Thus, when 

 the different heights above the orifices are as the numbers 1, 4, 9, 16, &c. the 

 velocities of the particles of water, issuing out, are found to be as the numbers 

 1, 2, 3, 4, &c. 



D D 2 



