. The Artizan. inary forge mixture) : REGENERATIVE GAS No. Shift. Date. 1867. May 27 28 Nos. ofHeat. Timecharged. 5. „ 256„ 45 8 „ 8 9 „ 15 10 „ 20 11 „ 40 First Ballout. 6 „ 32 7 „ 509 „ 9 10 „ 7 11 „ 22 12 „ 46 MetalCharged. Second Shift- 1 , 48 2 „ 50 3 „ 565 „ 06„ 57 „ 20 2„ 47 3 „ 47 4 „ 53 6 „ 3 7 ., 12 8 ., 15 Third Shift lb. 410 433430425426 412 428420426432425420 Yield. 396 410 426 430 412 410 414418417407422 1 9 „ 10 10 „ 15 423 414 2 10 „ 25 11 „ 30 422 412 3 11 „ 35 12 „ 40 420 420 4 12 „ 45 2 „ 0 430 410 6 2 „ 10 3 „ 10 424 411 t> 3„ 16 4 „ 20 420 4
. The Artizan. inary forge mixture) : REGENERATIVE GAS No. Shift. Date. 1867. May 27 28 Nos. ofHeat. Timecharged. 5. „ 256„ 45 8 „ 8 9 „ 15 10 „ 20 11 „ 40 First Ballout. 6 „ 32 7 „ 509 „ 9 10 „ 7 11 „ 22 12 „ 46 MetalCharged. Second Shift- 1 , 48 2 „ 50 3 „ 565 „ 06„ 57 „ 20 2„ 47 3 „ 47 4 „ 53 6 „ 3 7 ., 12 8 ., 15 Third Shift lb. 410 433430425426 412 428420426432425420 Yield. 396 410 426 430 412 410 414418417407422 1 9 „ 10 10 „ 15 423 414 2 10 „ 25 11 „ 30 422 412 3 11 „ 35 12 „ 40 420 420 4 12 „ 45 2 „ 0 430 410 6 2 „ 10 3 „ 10 424 411 t> 3„ 16 4 „ 20 420 400 First Shift. 1 5 „ 38 6 „ 45 423 402 2 6 „ 50 8 „ 0 422 400 3 8 „ 6 9 „ 8 430 390 4 9„ 15 10 „ 25 426 407 5 10 „ 35 11 „ 45 426 420 6 11 „ 55 1 „ 8 430 416 Second Shift. 1 2„0 422 422 2 3 ,. 6 4 „ 0 424 415 3 4 „ 5 5 „ 18 423 424 4 5 „ 23 6 „ 27 423 415 5 6 „ 33 7 „ 46 427 420 6 7 „ 49 8 „ 50 420 406. May 28 1 2345 Total charge„ yield. being at the rate of 20 cwt. 2qr. 21b. of pig iron per ton of puddled bar. ORDINARY FURNACE. Table No. 2. May 17 Weight of Metal Weight of Puddled Charged. Bar Produce. X lb. « 424 3 ^= 425 aT m 2= 3 405 •g* 430 > & S 438 ,0 H 426 s> & 420 * m m -^ 422 3>A 422 •+J CD 425 0> H 430450410 lb. 484426 or 22cwt. 2qr. 201b. of pig iron per ton of puddled bar. It will be observed that the ordinary furnace received charges of , and yielded on an average 4261b., representing a loss of 12 per cent,whereas the gas furnace received charges averaging 4281b., and yielded4131b., representing a loss of 3-5 per cent. It is important to observe, moveover, that the gas furnaces turned outeighteen heats in three shifts per twenty-four hours, instead of only twelveheats per twenty-four hours, which was the limit of production in the ord-inary furnace. The quality of the iron p
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