378 Bulletin 167 



82. Number 82 was made from sap collected March 29 

 from two trees located in a sheltered position which received an 

 abundance of sunlight. The sap obtained from these trees 

 naturally soured somewhat earlier than the average sap in the 

 orchard as a whole and was just about ready to stop running- at 

 the time this experiment was started. The sap had been allowed to 

 remain without being collected since the first indications of serious 

 souring, 2 or 3 days before. Neither titration nor bacteriological 

 count was made. The sap was concentrated to sugar at once, to 

 see whether it would grain properly, which it did. The sample 

 was neither scored nor analyzed. 



83. Number 83 was made from sap collected April 2 and 

 represented all the sap that had flowed from the trees mentioned 

 under 82, since March 29. At the time of collection these trees 

 had apparently entirely ceased running. The sap contained 

 43,875,000 organisms per cc. The reaction was 6% N/iooacid. 

 Like the preceding sample this was evaporated at once to a sugar 

 which grained readily. It was neither scored nor analyzed. 



84. Number 84 was made April 4 from a part of the same 

 sap from which 83 was made. The sirup contained 91.14' « 

 sucrose and 2.83% invert sugar. The color was 20, flavor 3', 

 and score 350. 



85. Number 85 was made from sour sap collected April 2, 

 but winch had been accumulating: in the buckets for several days. 

 It contained 11,275,000 organisms per cc. The reaction was 6' i 

 N/lOO acid. The sirup contained 94.68$ sucrose and T.57' ! 

 invert sugar. The color was darker than 20, flavor 3 1 , and score 



325- 



86. Number 86 had exactly the same history as 85 except 

 that when nearly evaporated to sirup it was allowed to cool to 

 about 35 C, following which the beaten white of two eggs 

 was added in order to test the clarifying power of this treatment. 

 The boiling was then continued. The sirup contained 93.21$ 

 sucrose and 1.23% invert sugar. The color was darker than 



