Weight of Raw Stock 12,266 Water filled in Tank 9,634 ------ 21,900 After Cooking:-- Lard 6,040 Skimmings 479 Water Tankage 19,360 25,879 -------------- Accumulation-Steam Condensed 3,979 Steam per 1,000 pounds, Raw Stock 324 lbs. =Cooking Test and Expense.=--The following test on the cost for cooking was made on killing and cutting lard--very large digesters--and from it valuable deductions can be made. Expert opinion has pronounced test _No. 1_ and test _No. 3_ as producing comparatively the best results in manufacture. KILLING AND CUTTING STOCK _Product_ No. 1 No. 2 No. 3 No. 4 Weight raw product 41,572 lbs. 41,236 lbs. 48,491 lbs. 41,322 lbs. Under pressure 12¹⁄₄ hrs. 11 hrs. 11 hrs. 11 hrs. Yield P. S. lard 32,665 lbs. 32,880 lbs. 24,525 lbs. 21,920 lbs. _Boilers_ Water evaporation while cooking 35,460 lbs. 24,420 lbs. 36,800 lbs. 23,990 lbs. Reduced to coal on 6 to 1 evap. 5,910 lbs. 4,070 lbs. 6,134 lbs. 3,986 lbs. Boiler pressure average 57.6 lbs. 62.8 lbs. 51.6 lbs. 50 lbs. Tank pressure average 40.2 lbs. 40.5 lbs. 34.5 lbs. 32.5 lbs. _Results_ Cost fuel at $1.36 per ton $4.02 $2.77 $4.17 $2.71 Steam, per 1,000 lbs. raw product 853 lbs. 593 lbs. 759 lbs. 579 lbs. Fuel, per 1,000 lbs. raw product 142 lbs. 99 lbs. 126 lbs. 98.5 lbs. Cost fuel, 1,000 lbs. raw product $.097 $.067 $.086 $.065 Clear Snowy Clear Clear Temperature 32 to 34 34 to 35 22 to 38 13 to 18 _Remarks on Cooking:_ No. 1 Test Cooked with three waters, boiled two hours before heading. No. 2 Test Cooked with one water, tank filled before heading. No. 3 Test Cooked with two waters, boiled two hours before heading. No. 4 Test Cooked with one water, tank filled before heading. =Tests.=--Innumerable tank house tests are made. The following few are submitted for quick reference, giving an idea as to yields of various kinds of products: TEST ON CONDEMNED HOGS--YIELD OF GREASE. Condemned hogs to tank 954 lbs. Yield of white grease 467 lbs. 48.95% Yield pressed tankage 173 lbs. 18.13% Yield dry tankage 86 lbs. 9.01% On the above the leaf lard was left in and heads off. COMPARATIVE TEST OF SHEEP HEADS AND JAWS TO TANK AND BONE HOUSE.