BY HEAT OF METALS A\D ^VLLOYS. 873 



Table VII. (continued.) 

 No. 51. — ^Ag Au, thrice boiled. 



Loss of weight 



V,= 3-99342(l+10-^x0-4906<), or if V„=l, then ¥,„,= 1-004906. 



No. 52. — AgAu, thrice boiled. 



9-0 3-99005 3-99080 3-99080 



58-3 3-93730 4-00055 4-00055 



98-0 3-84800 4-00830 4-00831 



V,= 3-98904(l + 10-*xO-49270. or if V„=l, then V,(,o= 1-004927. 



No. 53. — Ag Au^, thrice boiled. 



9-6 2-90470 2-90540 



60-6 2-86165 2-91110 



94-1 2-80700 2-91585 



V,=2-90453(l + 10-^x0-2989<+10-=x0-123<=), or if Vol, then V,oo= 1-004119. 



No. 54. — Ag Au„ thrice boiled. 



8-4 2-98805 2-98850 

 56-7 2-94930 2-99425 

 93-5 2-88895 2-99970 



V,= 2-9876G(1 + 10-' X 0-324K+ lO-'x 0-114<='), or if ¥„ = 1, then V,oo= 1-004381. 



No. 55. — ^Alloy of silver and platinum, containing GG-G per cent, by weight silver (lent 

 by Messrs. Joiinsox and Matthey), thrice boiled, 



7-0 4-G7260 4-67290 



58-4 4-60940 4-68370 



96-3 4-50995 4-69200 



V, = 4-67147(l+10-'x0-4359/+10-''x0-0213<=), orif Vo=l, then Vjoo = 1 -004572. 

 No. 56. — No. 55 repeated, thrice boiled. 



9-4 4-67330 4-67435 



59-4 4-60800 4-68470 



96-8 4-50930 4-69310 



Vj = 4-67252(1 + 10-' X 0-4134<+ 10-' X 0-043U''), or if Vo= 1, then V,oo-= 1-004565. 



No. 57. — ^AUoy of gold and copper, containing 6G-6 per cent, gold, gilded, once boiled» 



11-0 4-52820 4-52985 



59-4 4-46525 4-53965 



97-7 4-36740 4-54835 



V, = 4-52781(l + 10-'x0-4029 + 10-''x0-0629«=), or if \'„=1, tlien V,^= 1-004658. 



