VOL. LXXX.] 



PHILOSOPHICAL TBANSACTIONS. 



683 



nearly to what would have been 0° on its stem ; hence, as the heat of the room in 

 which the ex{)eriments were made remained about 6o°, the correction for the dif- 

 erent heat of the quicksilver in the stem from that in the ball of the thermometer 

 was calculated according to Mr. Cavendish's table, given in the 67th volume of 

 the Philos. Trans. Thus the real heat of the fluid in the weighing-bottle being 

 found, an allowance was made to reduce it to the exact degree indicated on the 

 scale of the thermometer. The precise specific gravity of the pure spirit employed 

 was .82514 ; but to avoid an inconvenient fraction it is taken, in constructing the 

 table of specific gravities, as .825 only, a proportionable deduction being made 

 from all the other numbers. Thus the following table gives the true specific gra- 

 vity, at the different degrees of heat, of a pure rectified spirit, whose specific gra- 

 vity at 60° is .825, together with the specific gravities of different mixtures of 

 it with water, at those different temperatures, as far as equal parts by weight. 



TABLE III. 

 Real Specific Gravities at the different Temperatures. 

 100 grs 



30' 

 35 

 40 

 45 

 50 

 55 

 60 

 65 

 70 

 75 

 80 

 85 

 90 

 95 

 100 



30* 

 35 

 40 

 45 

 50 

 55 

 60 

 65 

 70 

 75 



no 



.S5 



90 



95 



100 



The pure 

 spirit 



.83899 

 .83673 

 .83445 

 .83215 

 .82981 

 .82741 

 .82500 

 .82262 

 .82032 

 .81792 

 .81543 

 .8I291 

 .81044 

 .80794 

 .80548 



100 grs 

 of spirit 

 to 60 grs, 

 of water. 



.91853 

 .91644 

 .91438 

 .91222 

 .91007 

 .90791 

 .£0570 

 .90359 

 .90136 

 .89916 

 .89690 

 .89460 

 .89'-'30 

 .89003 

 .88/69 



100 grs 

 of spirit 

 to 5 grs 

 of water. 



.85001 

 .84776 

 .84551 

 .84321 

 .84084 

 .83843 

 .83609 

 .63374 

 .83142 

 .S2896 

 .82649 

 .82396 

 .82150 

 .8 1900 

 .81657 



100 grs 

 of spirit 

 to 6i grs. 

 of water. 



.92219 

 .92009 

 .9I8O5 



'91599 

 .91388 

 .91170 

 .90954 

 .90738 

 .90522 

 .90298 

 .9CO72 

 .89843 

 ,89617 

 .89390 

 ,89158 



100 grs. 1 1 00 grs 

 of spirit of spirit 



to 10 grs. 

 of water 



.85967 

 .85737 

 .85515 

 .85286 

 .85051 

 .84815 

 ..^4583 

 .84350 

 .84111 

 .83869 

 .83623 

 .83371 

 .83126 

 .82877 

 .82639 



100 grs 

 of spirit 

 to 70 grs. 

 of water. 



.92568 

 .92362 

 .92161 

 .91950 

 .91740 

 .91528 

 .91316 

 .91100 

 •90880 

 .90660 

 .90435 

 .90209 

 .89988 

 .89763 

 89536 



to 15 grs 

 of water 



.86819 

 .86592 

 .86367 

 .86140 

 .85910 

 .85677 

 .85445 

 .85213 

 .84975 

 .84731 

 .84491 

 .S4243 

 .84001 

 .83753 

 .83513 



100 grs 

 of spirit 

 to 7 5 grs 

 of water, 



.92888 

 .92687 

 •92489 

 .92281 

 .92075 

 .9 1863 

 .91606 

 .91440 

 .91225 

 .9IC05 

 .90780 

 .905:8 

 .90342 

 .90119 

 .89889J 



100 grs. 

 of spirit 

 to 20 grs. 

 of water. 



100 grs 

 of spirit 

 to 25 grs 

 of water 



.87589 

 .87363 

 .87140 

 .86913 

 .86688 

 .86455 

 .86223 

 .85991 

 .85758 

 .85517 

 .85276 

 .85036 

 .84797 

 .84550 

 .84308 



100 grs 

 of spirit 

 to 80 grs. 

 of water. 



.93191 



.9'2995 

 .92799 

 .92595 

 .92388 

 .92176 

 .91971 

 .91769 

 .91547 

 .91326 

 .91i03 

 .90882 

 .90668 

 .90443 

 .90215 



.88284 

 .88O6I 

 .87843 

 .87617 

 .87392 

 .87159 

 .8693 1 

 .86698 

 .864(:9 

 .86234 

 .85993 

 .85757 

 .85518 

 .85272 

 ,85031 



100 grs 

 of spirit 

 to 85 grs 

 of water 



.93483 

 .93281 

 .93O86 

 .92887 

 .92681 

 .92472 

 .92264 

 .92055 

 .91845 

 .91625 

 .91404 

 .91186 



.909<>7 

 .90747 

 .90522 



100 grs.lioo grs.lioo grs 

 of spirit of spirit of spirit of spirit 

 to 30 grs to 35 grs. 'to 40 grs. to 45 grs. 

 of water, of water, of water, of water. 



.88922 

 .88700 

 .88481 

 .88260 

 .88036 

 .87809 

 .87582 

 .87352 

 .87121 

 .86886 

 .86648 

 .86411 

 .86172 

 .85920 

 .85686 



100 grs 

 of spirit 

 to go grs 

 of water 



.93751 

 .93553 

 .93353 

 .93153 

 .92952 

 .9^^744 

 .92536 

 .92328 

 .92121 

 •91909 

 .91683 

 .9146J 

 .91248 

 .91029 

 .90805] 



.890O9 

 .CS9292 

 .89074 

 .88855 

 .88632 

 .88406 

 .88181 

 .87954 

 .87725 

 .87491 

 .87258 

 .87021 

 .86787 

 .86542 

 .86302 



.90053 

 .89839 

 .89026 

 .89405 

 .89187 

 .88963 

 .88740 

 .88518 

 .88291 

 .88058 

 .87822 

 .87590 

 .87360 

 .87114 

 .86879 



100 grs. 100 grs. 

 of spirit of spirit 

 to g5 grs. toioogrs. 

 of watcr^ of water. 



.9399(^ 

 .93796 

 .93602 

 .93407 

 .93202 

 .9W97 

 .92791 

 .92584 

 .92o77 

 .92164 

 .915M3 

 .91729 

 .91511 

 .91290 

 .91066 



.94225 



.94027 



.93835 



.93638 



.93436 



.93230 



.93025 



.92816 



.92608 



.92397 



.92179 



.91969 



.91751 



.91531 



.91310 



.90558 

 .90343 

 .90133 

 .89916 

 .89702 

 .89479 

 •89259 

 .8903 

 .88810 

 .88585 

 88352 

 .88120 

 .8/889 

 .87654 

 .87421 



100 grs 

 of spirit 

 to 50 grs 

 of water 



.91023 

 .9081 1 

 .90605 

 .90393 

 .90177 

 .89957 

 .89741 

 .89518 

 .89294 

 .89068 

 .88839 

 .88605 

 .88376 

 .88146 

 .87915 



100 gri. 

 of spirit 

 to 55 grs. 

 of water. 



.91454 

 .91242 

 .91034 

 .90822 

 .90608 

 .90390 

 .90173 

 .89952 

 .89733 

 .89507 

 .89277 

 .89043 

 .88817 

 .88588 

 .88357 



4S2 



