34 BULLETIN 983, U. S. DEPAEOIEXT OF AGRICULTURE. 
Series Ilia. 
1.4 per cent of H2SO4; 125 per cent of H«0; 7.5 atmosphere--:. 
Cook No. 
Time of 
cook, min- 
utes. 
Per cent of 
total 
sugars. 
23.17 
23.74 
22.37 
Average . 
23.46 
23. SI 
23.09 
Average. 
23. 45 
42. 
30 
22.34 
Per cent of 
total 
sugars fer- 
mentable. 
54.20 
53.67 
53. 92 
53.94 
53.16 
56.99 
Alcohol vields . 
Per cent of 
dry wood. 
Gallons ab- 
solute per 
6.972 
6.319 
6.214 
21.09 
19.11 
18. SO 
3.646 
20.10 
6. 362 
6.550 
19.24 
19. SI 
55.08 
6.456 
19.53 
63. 22 
6. S62 
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°/o OF TOTAL SUGARS. FERMENTABLE YIELD OF TOTAL SUGARS IN 
Vo OF DRY WEIGHT OF WOOD 
Fig. 3.— Series III and Ilia, showing the variation in yield of total sugars and percentage of total sugars 
that is fermentable with varying cooking periods at two different acid concentrations. Cooking pressure, 
7.5 atmospheres. 
These results are further illustrated graphically in' figures 3, 4, 
and 5. 
In a previous publication, 40 based on preliminary series III, the 
author stated that the time of cooking was apparently without 
effect. This statement was based on a total sugar data only, as 
practically all other alcohol data up to that time had been, and must 
now be, modified. 
Altogether three concentrations of acid and two concentrations 
of water were used, except in cook 21, as noted in the table. For 
^ Jour, of Ind. and Eng. Chem. 1914, 625. 
