CATALOGUE. — THEORY OF HYDRAULICS, OSCILLATIONS. 



223 



Prony Archit. hydraulique. 



Lorgna on spouting fluids. Soc. Ital. IV. 369. 



Loigna on the discharge of weres. Soc. Ital. 



V. 313. 

 Lorgna on the principles of Castelli. Soc. 



Ital. VI. 218. 

 Lempe BegrifF der maschinenlehre. Leipz. 

 Vince on the motions of fluids. Ph. tr. 1798. 



Gilb. II. 399. IV. 34. 

 *Gerstner on the discharge of water at differ- 

 ent temperatures. BiJhm. (ieseliech. 1798. 



Gilb. V. IfiO. 

 Bonati on the discharge of a vessel with 



diaphragms, and of a lengthened pipe. 



Soc. ital. V. 501. 



With experiments on the lateral communication of mo- 

 tion. 1700. 

 Stratico on the pressure of fluids, Soc. Ital. 



V. 525. 



On the lateral friction. 



Girard on the pressure of running water. 



Roz. XLir.429. 



Shows that it is not perceptibly dimijiished by atty com- 

 mon velocity. 



Venturi sur la communication laterale du 

 mouvement dans les fluides. Par. 1798. 

 R. S. Journ. Phys. XLV. (11.) 3G2. B. 

 Soc. Phil. n. 8. Gilb. 11.418. III. 35. Nich. 

 II. 172. 



Venturi found the discharge of a pipe greatest when the 

 ajutage diverged in an angle of 3° : when the angle be- 

 came 11°, the augmentation ceased. The diameter of tht 

 external orifice of a conical pipe may be to that of the vena 

 contracta as is to 10. 



Busse's remarks on Venturi. Gilb. IV. Il6. 

 Eytehvein's experiments with Venturi's ap- 

 paratus. Gilb. VII. 295. 



Afterwards published in his Handbuch, 



Hobison. Enc. Br. Art. River. 

 Banks on the velocity of air. Manch. M. V. 

 398. Nich. 8. II. 2G9. Report, ii. 1.342. 



The area of an aperture being .0046, 425.1 cubic inches 

 of air were expelled in 33" by a pressure of so inches of 



water; by a pressure of 6 feet in 21.3". This gi-ves .634 to 

 1 for the contractionof the stream: the velocities being 233.3 

 and 3C1.0. Hence a pressure of a foot gives 14?^, of an 

 inch 42, or 20 miles an hour. 



"Young's summary of hydraulics from Eytel- 

 wein. Journ. R. I., I. Nich. 8. III. 25. 



Young on the discharge of a vertical pipe. 

 Journ. R. I., I. Rep.ii. II. 45. Nidi. VI. 56. 



Leslie found that hydrogen gas admitted through an aper- 

 ture filled a given space in an inverted jar in 45" ; common 

 air in 130"; hence he infers that the defisities were as 

 1:81. Lesl. on heat. The same mode might be applied to 

 steam. 



Miehelotti found a stream of water a little more contracted 

 as the velocity was greater. Kobison. 



Air is subject to friction in pipes in the same manner as 

 water. 



Oscillations of Fluids, and of Floating 

 Bodies. 



Mairan on the analogy of sound and waves. 



A. P. 1737. 45. H, 97. 

 D. Bernoulli on the oscillation of floating 



bodies. C. Petr. 100. 

 Franklin's works. 



Franklin observed, that when oil swimming on water 

 was contained in a vibrating vessel, the water was agitated 

 while the oil remained still. 



Meister on the eifect of oil svvimminsr on 

 water. Commentat. Gott. 1778. 1. 35. 



On the oscillations observed by Franklin. 



Achard on calming the agitation of a fluid. 



A. Bed. 1778. 19. 

 fPercivalon attraction and repulsion. Manch. 



M. II. 429. 

 Bennet on Prankliu's e.xpciiment. Manch. 



M. III. 116. 



Shows, that if the lower part of a vessel of water be 

 tinged with any colour, it may be made to exhibit the 

 same appearance with water on which oil is swimming. 

 The fact is easily explained by considering the distance of 

 the different parts of the fluid from the axis of vibration. 



Stratico on the agitation of fluids in oscillat- 

 ing vessels. Ac. Pad. I. 242. 



