[snell] 



MAPLE PRODUCTS 



227 



They have already led to the recognition that the lead subacetate 

 solutions prepared by dissolving Home's salt in water are not identical 

 with those prepared by boiling lead subacetate solution with litharge, 

 even when the directions given in the methods of the Association of 

 Official Agricultural Chemists are closely adhered to and do not give 

 identical results in the determination of Canadian lead number. 

 Details of this work will be published in due time. 



Macdonald College, 



May 20, 1919. 



Table I 



Ash A nalyses of Maple Sugar Sand 



% Air-dry Ash.... 

 Ignited Ash 



Carbon Dioxide. . . 



Carbon 



Sand and SiUca . . . 



Lime (CaO) 



Magnesia (MgO). . 



Potash (K2O) 



Iron oxide (FeaOs) 

 Manganese oxide 



(MnO) 



Phosphoric acid 

 (P2O6) 



Summation 



Moisture^ 



Sample Number 



55-37 



60-24 



59-02 



60-15 



58-67 



56-32 



54-26 

 33-45 



52-22 

 32-08 



91 



32-26 



36-14 



11-14 

 46-49 



tr 

 3-38 



25-27 



2-09 



30-81 



37-57 



tr 



2-30 



1-64 



30-94 



2-49 

 22-24 

 41-12 



0-47 



tr 



3-06 



1-19 



29-81 



2-4C 

 24-98 

 40-00 



1-40 



tr 



2-71 



1-37 



34-07 



2-29 



18-15 



43-17 



0-76 



tr 



2-55 



0-57 



30-68 



2-23 



24-54 



40-95 



1-56 



tr 



0-52 



0-92 



15-00 



18-28 



0-34 



0-06 



0-65 



0-78 



11-64 



19-30 



0-34 



0-06 



1-30 



7-74 



24-03 



0-05 



0-39 



0-05 



97-15 

 3-36 



99-68 

 3-60 



101-51 

 1-87 



102-67 

 3-28 



101-56 



2-85 



100-48 

 2-86 



35-25 



33-42 



32-26 



100-51 



103-28 



103-38 



105-95 



104-40 



103-34 



^Warren, Journal Amer. Chem. Soc. 2)Z (1911), 1205-11. The figures given 

 above are those of the first of two very similar analyses. 



^ The gain in weight upon exposure to air. This may have consisted partly 

 of carbon dioxide. 



