MAPLE SUGAR. 5 
TaBLeE II.—Comparison of sugar and sirup results ( Jones).+ 
Calculated to dry 
Sirup from same basis from ap- 
Maple sugar. sugar. proximately 65 
per cent solids. 
Total Tnsolu- Total Insolu- Total Insolu- 
ash. ble ash. ash. ble ash. ash. ble ash. 
Per cent. | Per cent. | Per cent. | Per cent. | Per cent. | Per cent. 
0. 80 0. 34 0. 56 0. 22 0. 86 0. 34 
1.08 . 64 252 -18 . 80 . 28 
1 Jones does not state that the figures on ‘“‘ Maple sugar’’ were calculated to a dry basis. The figures on 
“Sirup from same sugar’’ are on a basis of 11 pounds to the gallon. 
A case has never been noted in which by this treatment the sirup 
produced gives all analytical figures below the minima discussed on 
page 45 unless the maple sugar has been adulterated by the use of 
some other sugar. 
Trials were also made to determine whether making into a sugar 
a second time tended to reduce these figures. Samples of sugar 
sirups were converted into sugar and then redissolved to a sirup of 
standard density. As shown in Tables I and II, this treatment does 
not materially change the results. 
TaBLE III.—Analysis of sugar sirups converted into sugar and redissolved to sirup. 
Sirup from first sugaring. Sirup from second sugaring. 
| 
Total TInsolu- Lead Sa Total Tnsolu- Lead ae 
ash. ble ash. | number. aliG ash. ble ash. | number. ealie 
Per cent. | Per cent. Per cent. | Per cent. 
0. 78 0. 23 1. 86 0.59 0.77 0. 23 1.88 0. 60 
. 87 . 24 2.14 . 76 91 . 24 DIM - 78 
- 83 SPH 2.22 73 . 82 . 28 2.25 .74 
SUe . 24 1. 86 . 60 - 76 25 1.87 . 62 
The removal of this precipitated mineral and organic matter, 
spoken of in commercial manufacture as the refining of the maple 
sugar, is simply the removal of suspended matter contained in the 
sugar sirup. As shown by Table III, this does not tend to reduce the 
analytical figures below the minimum for pure products. 
In a later publication * Jones calls attention to the effect of con- 
centration on the percentage of the ash and also malic acid value. 
As a liquid product is concentrated, its power of holding salts in solu- 
tion becomes less; hence one expects to find less ash in a more con- 
centrated solution than in one of lower concentration. This is true 
of maple, as shown in Table IV. 
1 Vt. Agr. Exp. Sta. Bul. 167, p. 466. 
