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[[preprinted]]2[[/preprinted]]

(in concentration 2 new measurements for difference of 4 or +, 1 new for a difference of 3. ) 

in form new measures for 3 or over 

diameter remeasured for differences of .6 or more, 
if 3rd reading agreed or was only one different from one of the first two, a 4th reading was made. If this was in agreement with the two preceding similar  ones, the one discordant reading was dropped and a mean taken of the three.If the 4th reading was different again or agreed with the discordant one of the 1st three, and if no misidentification on other such explanation was found, a mean of all 4 readings was taken. 

1 scale reading =12" of arc on A plates, scale readings multiplied by 12 and decimal dropped. 

Means for C & F:
For those differing by 1 step in Concent., the  
estimates were chosen alternately right and left in the columns, for those differing by 1 step in Form the estimates were chosen alternately odd and even. 

*the letters representing degrees of concentration were later reversed, These are in the original order. 
 

Transcription Notes:
---------- Reopened for Editing 2024-10-08 13:13:20