be it remembered I am not now giving results of assays, but only imaginary examples. 1 part bone-coal reduced 10.00 parts by weight of litha ge Table of Analyses of different Clays, from which the most approved Crucibles are made. ton, England, by 42.0 40.9 0.1 1.3 Trace 14.7 Le Play. 8.2 1.0 33.9 99.0 98.7 Total. To what use applied. The two first clays, 1 to 3 inclusive, are used chiefly for crucibles in the manufacture of steel in England. This is the clay from which the famous Hessian crucibles are made. These two, the first a clay, the second, graphite, are mixed in the proportions of from 3 to 4 of the first to 1 part of the latter, in the manufacture of the well-known Passau graphite crucibles. Table showing, in Degrees of the Centigrade and Fah renheit Thermometers, the Amount of Heat necessary to melt various Substances. Table of Troy Weights used with Gold, and Silver, and Platina. 24 grains (gr.) make 1 pennyweight (dwt.) The value of gold is given in carats fine, 24 c. f. being pure. One pound of gold 24 carats fine contains 5760 grs. of pure gold, as gold of that number of carats fine is unalloyed. One pound of gold 23 carats fine contains 5520 grs., and so on, and one oz. of gold 20 c. f. has 400 grs. one dwt. of gold 15 c. f. has 15 grs. These are given as examples of the manner in which the amount of the pure metal ought to be calculated. (Tun,) (Hundredweight) (Quarter) (Pound) (Ounce) T. cwt. qr. Table of Avoirdupois Weights used with other Metals. (Dram) dr. 224035840 573440 112= 1792= 28672 = A Table of Comparison of Twelve different National Pound Austrian Bavarian Saxon (or Wurtemburg Old Cologne Avoirdupois. Pound. Pound. Soll.) Pound. Mark. Pound. 1 0.80998 0.81000 0.90720 0.96979 1.94001 9.90847 9.90848 9.95770 9.98668 0.28780 0.51546 0.41751 0.41752 0.46762 0.49989 9.71220 9.62067 9.62068 9.66990 9.69887 1 1.10078 0.89160 0.89162 0.99862 1.06752 2.13551 0.04170 9.95017 9.95618 9.99940 0.02838 0.32950 0.93770 0.75952 0.75953 0.85068 9.97206 9.88054 9.88055 9.92977 0.90937 1.81915 9.95874 0.25987 1.07916 0.87410 0.87412 0.97901 1.04656 2.09359 0.03309 9.94156 9.94157 9.99079 0.01976 0.32089 2.20460 1.78568 1.78571 2.00000 2.13800 0.34333 0.25180 0.25181 0.30103 0.33001 4.27693 0.63113 0.90283 0.73127 0.73129 0.81904 9.95560 9.86408 9.86409 9.91331 1.03111 0.83518 0.83520 0.93542 0.99996 2.00037 0.01331 9.92178 9.92179 9.97101 9.99998 0.30111 0.87555 1.75149 9.94228 0.24341 |