Micro-organisms oe Maple Sap 389 



sirups from last run sap in i9ii 

 As in two preceding years, as soon as the season was suf- 

 ficiently advanced, trees which were running a sour sap were 

 selected to be retapped in order to procure material from both 

 fresh and sour tap-holes of the same tree at the same time. 



121. Number 121 was made from sour sap obtained on 

 April 21, after the buds were beginning to show considerable 

 green. The sap was cloudy but not excessively so. The sirup 

 contained 93.94% sucrose and 0.34% invert sugar. The color 

 was 7, flavor 5, and score 450; depreciation from control (num- 

 ber 122), color 2, flavor o, and score 50; depreciation from the 

 first run control of the season (number 89), color 4. flavor 3. 

 score 450. 



122. Number 122 was made from sap obtained from the 

 same tree as 121 and at the same time but from the fresh tap- 

 hole. The sirup contained 95.80% sucrose and 0.07', invert 

 sugar. The color was 5. flavor 5, and score 500; depreciation 

 from first run control, color 2, flavor 3, and score 400. 



123. Number 123 was made from sap obtained April 24 

 from a sour tap-hole. The sirup contained 95.33$ sucrose and 

 0.64% invert sugar. The color was n, flavor 6, and score 

 250; depreciation from control (number 124), color 6, flavor 1. 

 and score 250; depreciation from first run control, color 8, 

 flavor 4, and score 650. 



124. Number 124 was made from sap obtained from the 

 same tree and at the same time as that for 123, but from a fresh 

 tap-hole. It contained 98.54% sucrose and 0.59% invert sugar. 

 The color was 5, flavor 5, and score 500; depreciation from first 

 run control, color 2, flavor 3, and score 400. 



125. Number 125 was made from sour sap obtained from 

 the tree April 24. It contained 93.88% sucrose and 0.53% in- 

 vert sugar. The color was 7, flavor 5, and score 450; depreci- 

 ation from control (number 126), color 1, flavor o. and score 25; 

 depreciation from first run control, color 4, flavor 3, and score 



45°- 



