determination of the former is of use at times in detecting adultera- 

 tion, since sulphates are present in relatively large amounts in many 

 commercial cane and beet sugars. The amounts of lime and 

 potash also afford data useful in judging the purity of suspected 

 samples. Methods for these individual determinations are given in 

 Circular 23 of the Bureau of Chemistry, entitled " Methods for the 

 Examination of Maple Products," page 6. Owing to the work in- 

 volved, these determinations are made only in important cases when 

 other tests do not furnish convincing data. 



Compiled analyses of ash of maple products and adulterants ( Jones}. a 

 MAPLE SIRUP. 



a Eighteenth Ann. Rpt., Vermont Agr. Exper. Sta., 1905, p. 331. 



ft In the ratios given in this and other tables following the antecedent term has been made the 

 divisor. 



XIV. TABULATED SUMMARY OF RESULTS. 



The figures in the* following table are based on the results on pure 

 maple products published by Win ton, Hortvet, and Jones, and on 

 some sixty samples of pure maple sirup analyzed in the Sugar 

 Laboratory of the Bureau of Chemistry in 1904 and 1905. The 



[Cir. 40] 



