122 



ASTRONOMICAL AND NAUTICAL 

 COLLECTIONS. 



1. Table of the Depression 0/ Mercury in the Tube of a 

 Barometer, including that of Mr. Bouvard fConn. des 

 Terns, 1829;. 



PIAMETEB. 



CENTRAL DEPRESSION. 



Inches. 

 1.0000 

 .82SS 

 .8071 

 .8000 

 .7874 

 .7677 

 .7480 

 .7284 

 .7087 

 .7000 

 .6890 

 .6693 

 .6496 

 .6299 

 .6102 

 .6000 

 .5905 

 .5709 

 .5512 

 .5315 

 .5118 

 .5000 

 .4921 

 .4725 

 A59S 

 .4500 

 .4331 

 .4134 

 .4000 

 .3937 

 .3740 

 .3543 



Millimetres. 



25.401 

 21.000 

 20.530 

 20.321 

 20.000 

 19.500 

 19.000 

 18.500 

 18.000 

 17.780 

 17.500 

 17.030 

 16.500 

 16.000 

 15.500 

 15.240 

 15.000 

 14.500 

 14.000 

 13.500 

 13.000 

 12.701 

 12.500 

 12.000 

 11.500 

 11.430 

 11.000 

 10.500 

 10.160 

 10.000 

 9.500 

 9.000 



Bouvard, 1826. 



Mr. Ivory, 

 1820. 



.028m??j 

 .032 



.036 

 .041 

 .047 

 .053 

 .050 



.068 

 .077 

 .087 

 .099 

 .112 



.127 

 .143 

 .161 

 .181 

 .204 



.230 

 .260 

 .293 



.330 

 .372 



.419 

 .473 

 .534 



.001 lOi 

 .00126 



[.00132] 

 .00142 

 .00161 

 .00185 

 .00209 

 .00236 



[.00250] 

 .00267 

 .00303 

 .00343 

 .00390 

 .00441 



[.00472] 

 .00500 

 .00563 

 .00634 

 .00713 

 .00803 



[.00S63] 

 .00906 

 .01024 

 .01154 



[.01175] 

 .01299 

 .01455 



[.01590] 

 .01650 

 .01862 

 .02103 



Dr. Youncf, 

 1818. 



.00031e 



Observed, 

 Ld. C. C. 



.001 19e .00115 



.00228 (.00220) 



[.00431J .00416 



.005/ 



.00835 (.00799) .007 



.01117 (.010J9) 



.01534 



.01503 



.015 



