Bulletin of the of Agriculture . cm it /—^P\ / f v f* ~« £ 3 -i - W 7V- 7 u - J ^2 - £-/ -4 If 7 r / 7 --\r l-f 75^ r „/: P • Fig. 4.—Cooking curves for cooks 72, 79, 70, and 71. 1, temperature; 2, gauge pressure; 3, gas pressure; 4, steam pressure. PRODUCTION OF SULPHITE PULP FROM SPRUCE. 11 200 ? CM IK SI / fc i 7 f r r/ \h <^o ii r tc. 1= u a ij sw I / ? (* j t /, t / f / • 1 COOK 86 s 4 I 4r-- £V -£H- F - -J - W - J-£ - tt - ^ i- ?l T\ ti ft ? *. Q 2 f yf _[_ t: COOK 87 22 jj 7—- -Ju^ l\ Y~jj_ -lIJ. 77 L-i J-, !_, £? rr ^ £ / r /l. — OOI E8 / /* r^ r^ ?j / / /^ / / / j t i
Bulletin of the of Agriculture . cm it /—^P\ / f v f* ~« £ 3 -i - W 7V- 7 u - J ^2 - £-/ -4 If 7 r / 7 --\r l-f 75^ r „/: P • Fig. 4.—Cooking curves for cooks 72, 79, 70, and 71. 1, temperature; 2, gauge pressure; 3, gas pressure; 4, steam pressure. PRODUCTION OF SULPHITE PULP FROM SPRUCE. 11 200 ? CM IK SI / fc i 7 f r r/ \h <^o ii r tc. 1= u a ij sw I / ? (* j t /, t / f / • 1 COOK 86 s 4 I 4r-- £V -£H- F - -J - W - J-£ - tt - ^ i- ?l T\ ti ft ? *. Q 2 f yf _[_ t: COOK 87 22 jj 7—- -Ju^ l\ Y~jj_ -lIJ. 77 L-i J-, !_, £? rr ^ £ / r /l. — OOI E8 / /* r^ r^ ?j / / /^ / / / j t i 1 ^ / 7 / / [/ 1. Fig. 5.—Cooking curves for cooks 81, 86, 87, 88, and 89. 1, temperature; 2, gauge pressure; 3, gas pressure; 4, steam pressure. : ! ! COOK i 0 i 1 n i : 1/ • // • / . - ?// / UM / \\ j i ii| (f Zs s 1/ |/ / r / / 4 I - COOK 91 j 2I l/n~ A 1/ i /jK/ ! 1, 1 / / / h At CO OK 92 / 1 ^ K /A i/ if ! /I / ? / / / p . / ^ CO >K 94 X, ^1 jV 1/ 1 f) — / \s IV i h i / ^ j ^ / / / 1 ^ 1 4 1 TIHE IN HOURS 8 10 12 Fig. 6.—Cooking curves for cooks 90, 91, 92, and 94. 1, temperature; 2, gauge pressure; 3, gas pressure: 4, steam pressure. 12 BULLETIN 620, U. S. DEPARTMENT OF AGRICULTURE. curve 4 shows the steam pressures corresponding to the tempera-tures. Curve 2 shows the gauge pressure, and curve 3 shows thegas pressure, which is the difference between the gauge pressure andthe steam pressure at any given point. Endeavor was made to keepthe temperature curve a straight line, but sometimes the tempera-ture would drop and then to reach the desired temperature the observerwould turn o
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectagriculture, bookyear
