30 CHEMICAL COMPOSITION OF APPLES AND CIDER. 



January 25. Analysis gave the following results: 



Specific gravity 1. 003 



Solids grams per 100 cc. . 2. 64 



Sugar do 90 



Alcohol do 6. 00 



Acid do 39 



Tannin do 034 



January 28. Bottled 75 quarts under same conditions as for test 

 No. 7. Liquor slightly clearer than No. 7, not bright, pale amber; 

 aroma rich and fruity; flavor very good a fine dry cider. 



April 19. Liquor bright and beautiful; slight yeast deposit; not 

 flocculent; bouquet good; flavor mild; a good, sour, still wine. This 

 is the most promising American yeast isolated. 



CASK EXPERIMENT No. 9. 



General notes the same as on cask experiment No. 6. Cask No. 9 

 was sown with 1 pint of yeast culture No. 73, prepared as previously 

 described. The barrel was plugged with cotton wool at once, and later 

 closed with the ventilation apparatus. The origin of yeast No. 73 has 

 been given under test No. 2. 



NOTES. 



October 1. Fermentation well under way; heavy foam resting on 

 must; no air in the barrel; temperature of the must, 66 F. 



October 2. Fermentation progressing rapidty. 



October 3. Fermenting more slowty. Microscopic examination 

 shows yeast to be abundant and a few Apiculatus cells present. 



October 10. Condition same as in test No. 6; specific gravity, 1.012. 

 Microscopic examination shows yeast to be abundant, large, and round. 

 No head on liquor; temperature of must, 58 F. 



October 20. Liquor very cloudy; slight taste of tannin; aroma very 

 good; specific gravity, 1.0025. 



October 27. Partial analysis showed a specific gravity of 1.003; 

 alcohol 4.96 grams and sugar 0.31 gram per 100 cc of cider. 



October 28. Racked as in case of No. 6. 



November 19. Liquor slightly lighter in color than previous num- 

 bers; slight cloud, not exactty bright; aroma the best of all the tests 

 and flavor very good; specific gravity, 1.001. 



December 22. Filled 75 quart bottles. Liquor clear, but not bright; 

 flavor excellent; aroma fruity. The remaining cider was left in the 

 barrel tightly bunged. 



January 5, 190 J^. Specific gravity, 0.999. 



