108 Dr. Young's Experiments and Inquiries 



Table r. 



A is the area, in square inches, of an 

 aperture nearly circular. B, the pressure 

 in inches. C, the number of cubic inches 

 discharged in one minute. 



All numbers throughout this paper, 

 where the contrary is not expressed, are 

 to be understood of inches, linear, square, 

 or cubic. 



A 



B 



C 



.00018 

 .00018 

 .00018 



.25 



•58 

 1. 



39 

 11.7 



15*6 



.001 

 .001 



.045 

 .2 



7.8 

 15.6 



.001 

 .004 



•7 

 •35 



31.2 

 46.8 



Table 11. 



A 



B 



C 



.07 



.07 



1. 

 2. 



2000. 

 2900. 



A is the area of the section of a tube 

 about two inches long. B, the pressure. 

 C, the quantity of air discharged in a mi- 

 nute, by estimation. 



Table in. 



A 



B 



C 



D 



.0064 



1.15 



.2 



46.8 



.0064 



10. 



•45 



46.8 



.0064 



13-5 



•35 



31.2 



.0064 



13-5 



•7 



46.8 



A is the area of the section of a 

 tube. B, its length. C, the pressure. 

 D, the discharge in a minute. 



Table iv. 



A 



B 



C 



.003 



.28. 



46.8 



A is the area of an oval aperture, formed 

 by flattening a glass tube at the end : its dia- 

 meters were .025 and .153. B, the pressure. 

 C, the discharge. 



