VOL. LXXX.] 



PHILOSOPHICAL TRANSACTIONS. 



681 



meter, without any allowance in the first instance, because the coincidence of 

 the mercury with a division can be perceived more accurately than any fraction 

 can be estimated ; and the errors of the thermometers, if any, it was supposed 

 would be less on the grand divisions of 5°, than in any others. Mr. Gilpin 

 used the same mixture throughout all the different temperatures, heating it up 

 from 30° to 100°; hence some small error in its strength may have been occa- 

 sioned, in the higher degrees, by more spirit evaporating than water ; but this, 

 it is believed, must have been trifling, and greater inconvenience would pro- 

 bably have resulted from interposing a fresh mixture. 



TABLE I. 



Weights at the different Degrees of Temperature. 



Heat. 



The pure 

 spirit 



30' 

 35 

 40 

 45 

 50 

 55 

 60 

 65 

 70 

 76 { 

 80 

 85 

 90 

 95 

 100 



Heat. 



30° 



35 



40 



45 



50 



55 



60 



65 



70 



75 



80 



85 



90 



95 



100 



Grains. 



2487.32 



2480.79 



2474.18 



24^7.52 



2460.77 



2453.84 



2446.86 



2440.04 



2433.37 



2126.47 



2419.18 



2412.02 



2404.92 



2397-75 



2390.64 



lOOgrs.of 

 spirit to 

 55 grains 

 of water. 



Grains 



2711. 

 2705. 



2699. 

 2692. 

 2686 

 2680 

 2674 

 2067 

 2661 

 ■2655 

 2648 

 2641 

 2635 

 2628 

 2622 



lOOgrs.of 

 spirit to 5 

 grains 

 water. 



of 



lOOgrs.of 

 spirit to 

 10 grains 

 of water. 



Grains, 



251998 



2513.48 



2506.98 



2500.33 



2493.48 



2486,51 



2479.75 



2472.97 



2466.28 



2459. 18 



2451.95 



2444.80 



2437.72 



2430.56 



2423.53 



lOOgrs.of 

 spirit to 

 60 grains 

 of wat«r. 



Grains. 



272.3.00 



2716.96 



2711.02 



2704.82 



2698.63 



2692.44 



2686.16 



268O.OO 



2673.68 



2667.32 



2660.69 



2654.19 



2647.61 



2641.10 



2634.38 



Grains. 



2548.59 



2541.96 



2535.52 



2528.90 



2522.10 



2515.30 



2508.60 



2501.87 



2495.00 



2488.03 



2480.83 



2473,68 



2466.64 



24.59.51 



2452.63 



100 grs. of 

 spirit to 

 15 grains 

 of water. 



lOOgrs.of 

 spirit to 

 20 grains 

 of water, 



Grains, 



2573.86 



2567.34 



2560.83 



2554.24 



2547.61 



2540.88 



2534.19 



2527.51 



2530.65 



2513.63 



2506.61 



2499.50 



2492.62 



2485.51 



2478.59 



TOO grains 

 of spirit to 

 65 grains 

 of water. 



Grains. 



2733.84 



2727.78 



2721.90 



2715.98 



Grains. 



2596.65 



2590.15 



2583.70 



2577.16 



2570.6+ 



2563.94 



2557.23 



2550.56 



2543.84 



2536.91 



2529.8.0 



2523.08 



2516.20 



2509.15 



2502.15 



100 grains 

 of spirit to 

 70 grains 

 of water. 



Grains. 



2744.19 



2738.24 



2732.45 



2726.38 



27e9.921272O.37 

 2703.67|2714.27 

 2697.44270s. 18 

 2691.22I 270 1.99 

 2685.022695.66 

 2678.6012689.34 

 2672.O2I2682.77 

 2665.54'2676.40 

 2659.07 j 2670.09 

 2652.56|2663.64 

 2645.95I2657.14 



lOOgrs.of 

 spirit to 

 25 grains 

 of water. 



Grains. 

 2617.24 

 26IO.8O 

 2604.50 



2597.99 

 2.591.50 



2584.79 

 2578.22 

 2571.48 

 2564.89 

 2558.14 

 2551.10 

 2544.41 

 2537.57 

 2530.51 

 2523.59 



100 grains 

 of spirit to 

 75 grains 

 of water 



Grains. 



2753.67 



2747.90 



2742.18 



2736.21 



2730.27 



2724.20 



27 18.26 



2712.06 



2705.87 



2699.57 



2693.03 



2686.77 



268O.6O 



2674.20 



2667.61 



100 grs. ofi 1 00 grs. of*! 100 grs. of 

 spirit to spirit to'spirit to 

 30 grains 35 grainsj40 grains 

 of water, of water, of water. 



Grains. 



2636,16 



2629.77 



Grains. 



2653.54 



2647.30 



2623.4-2J264-l.02 

 2617.04 12634.68 

 2610.592628.26 

 2604.072621.77 

 2597.502615.26 



100 grains 

 of spirit to 

 80 grains 

 of water. 



Grains. 



2762.61 



2756.97 



2751.35 



2745.47 



2739.52 



2733.^7 



2727.56 



2721.47 



2715.40 



2709.O8 



2702.57 



2696.33 



2690.22 



2683.79 



2677.25 



2590.86 

 2584,23 

 2577A7 

 2570.52 

 2563.80 

 2556.95 

 2549.95 

 2543.08 



100 grains 

 of spirit to 

 85 grains 

 of water. 



26O8.72 

 2602.14 

 2595.43 

 2588.61 

 2581,91 

 2575.20 

 2568.18 

 2561.28 



100 grains 

 ofspiritto 

 90 grains 

 of water 



Grains, 



2771.26 

 2765.47 

 2759.85 

 2754.13 

 2748.22 

 2742.25 

 2736.26 

 2730.27 

 2724.22 

 2717.95 

 2711.50 

 2705,37 

 2699.10 

 2692.8 1 

 26 86.36 



Grains, 



2779.21 



2773.53 



2767.78 

 2762.03 



ofjioogrs.of 

 spirit to 

 45 grains 

 of water. 



Grains. 



2669.64 



2663.48 



2657.35 



2650,96 



2644.6s 



2638.25 



2631.82 



2625.41 



26I8.89 



2612.20 



2605.32 



2598.76 



2592.17 



2585.12 

 2578.37 



Grains. 



2684.63 



2678.43 



2672.37 



2666.13 



1659.95 



2653.55 



264-7.20 



2640.80 



2634.30 



2627.78 



2621.03 



2614.48 



2607.86 



2601.12 



2594.45 



100 grains 

 ofspiritto 

 95 grains 

 of water. 



Grains. 



2786.47 



27 80.75 

 2775.15 

 2769.55 



1756.25 2763,67 

 2750,3212757.82 

 2744,3212751.^7 

 273S.35|2745 93 

 2732,42!2740,00 

 2726.252733,92 

 2719.78'2727.4P 

 2713.692721.47 

 2707.44 2715.22 

 2701.18 27OS.91 

 2694.76 2702.50 



100 grains 

 ofspiritto 

 100 grains 

 of water. 



Grains. 



2793.26 



27^7.59 



2782.06 



2776.40 



2770.62 



2764.72 



2758.82 



2752.82 



2746.88 



2740.83 



2734.49 



2728.60 



2722.32 



2716.04 



2709.73 



100^. of 

 spirit to 

 50 graiiu 

 of water. 



Grains. 



2698.41 



2692.32 



2686.37 



2680.25 



2674.04 



2667.72 



2661.45 



2655.09 



2648.65 



2642.17 



2635.47 



2628.87 



2622.50 



2615.70 



2609.11 



VOL. XVI. 



4S 



