126 



METHODS OF ANALYSIS 



[Chap. 



Table 11.— Continued. 

 Densities of solutions of cane sugar at 20° C. 



TENTHS OP PER CENT 



1.2S6456 

 1.292354 

 1.298291 

 1.304267 

 1.310282 



1 316334 

 1.322425 

 1.328554 

 1.334722 

 1.341 



1.347174 

 1.353456 

 1.359778 

 1.366139 

 1.372536 



1.378971 

 1.385446 

 1.391956 

 1.398505 

 1.405091 



1.411715 

 1.418374 

 1.425072 

 1.431807 

 1.438579 



1 .445388 

 1.452232 

 1.459114 

 1.466032 

 1.472986 



1.479976 

 1 .487002 

 1.494063 

 1.501158 

 1.508289 



1.515455 

 1.522656 

 1.529891 

 1.537161 

 1.544462 



1.551800 



1.287044 

 1.292946 

 1.298886 

 1.304867 

 1.310885 



1.316941 

 1.323036 

 1.329170 

 1.335342 

 1.341551 



1.347801 

 1.354087 

 1.360413 

 1.366777 

 1.373178 



1.379617 

 1.386096 

 1.392610 

 1.399162 

 1.405752 



1.41 



1.419043 



1.425744 



1.432483 



1.439259 



1.446071 

 1.452919 

 1.459805 

 1.466726 

 1.473684 



1.480677 

 1.487707 

 1.494771 

 1.501870 

 1.509004 



1.516174 

 1.523378 

 1.530616 

 1.537889 

 1.545194 



1.287633 

 1.293539 

 1.299483 

 1.305467 

 1.3114S9 



1.317549 

 1.323648 

 1.329785 

 1.335961 

 1.342174 



1.348427 

 1.35471 

 1.36104 

 1.367415 

 1.373820 



1.380262 



1.386745 



1.393263 



1.39! 



1.406412 



1.413044 

 1.419711 

 1.426416 

 1.433158 



1.446754 

 1.453605 

 1.460495 

 1.467420 

 1.474381 



1.481378 

 1.488411 

 1.4954? 

 1.50258; 

 1.509720 



1.516893 

 1.524100 

 1.531342 

 1.538618 

 1.5459: 



1.288222 

 1.294131 

 1.300079 

 1.306068 

 1.312093 



1.318157 

 1.324259 

 1.330401 

 1.336581 

 1.342798 



1.319055 



1.355349 



1.361682 



1.36: 



1.374463 



1.380909 

 1.387396 

 1.393917 

 1.400477 

 1.407074 



1.413709 



1.420380 



1.42 



1.433835 



1.440619 



1.447438 

 1.454292 

 1.461186 

 1.468115 

 1.475080 



1.482080 

 1.489117 

 1.496188 

 1.503293 

 1.510435 



1.517612 

 1.524823 

 1.5.32068 

 1.539347 

 1.543659 



1.289401 

 1.295318 

 1.301274 

 1.307271 

 1.313304 



1.319374 

 1.325484 

 1.331633 

 1.337821 

 1.344046 



1.350311 

 1.356612 

 1.362953 

 1.36! 

 1 .375749 



1.382203 

 1.388696 

 1.395226 

 1.401793 

 1.408398 



1.455668 

 1.462568 

 1.469504 

 1.476477 



1.4834S4 

 1.490528 

 1.497606 

 1.504719 

 1.511868 



1.519051 

 1.526269 

 1.5335: 



1.319983 



1.32( 



1.332250 



1.338441 



1.344671 



1.382851 

 1.389347 

 1.395881 

 1.402452 

 1.409061 



1.415706 

 1.422390 

 1.429109 

 1.435866 

 1.442661 



1.449491 

 1.456357 

 1.463260 

 1 470200 

 1.477176 



1.484187 

 1.491234 

 1.498316 

 1.505432 

 1.512585 



1.351568 

 1.357877 

 1.364226 

 1.370613 

 1.377036 



1.383499 

 1.389999 

 1.390536 

 1.403111 

 1.409723 



1.416373 

 1.423059 

 1.429782 

 1.436543 

 1.443342 



1.450175 



1.457045 



1.463953 



1.47( 



1.477876 



1.520492 

 1.527717 

 1.534976 

 1.542267 

 1.549595 



1.291172 

 1.297100 

 1.303068 

 1.309077 

 1.315121 



1.321203 

 1.327325 

 1.333485 

 1.339684 

 1.345922 



1.352197 

 1.35851 

 1.364864 

 1.371254 

 1.377680 



1.384148 

 1.390651 

 1 .397192 

 1.403771 

 1.410387 



1.417039 

 1.423730 

 1.430457 

 1.437222 

 1.444024 



1.450860 

 1.457735 

 1.464645 

 1.471592 

 1.478575 



1.485593 

 1.49264 

 1.49973 

 1.506859 

 1.514019 



1.521212 

 1.528441 

 1.535704 

 1.542998 

 1.550329 



1.352827 

 1.359144 

 1.365501 

 1.371894 

 1.378326 



1.384796 

 1.391303 

 1.397848 

 1.404430 

 1.411051 



1.417707 

 1.424400 

 1.431131 

 1.437900 

 1.444705 



1.451545 

 1.458424 

 1.465338 

 1.472289 

 1.479275 



1.486297 

 1.493355 

 1.500447 

 1.507574 

 1.514737 



10 



REFRACTOMETER METHOD.— TENT A TIVE. 



Determine the refractive index of the solution at 28°C. and obtain the corre- 

 sponding percentage of dry substance from 11. If the refractive index is obtained 

 at a temperature other than 28°C., correct the result as indicated in 12. If the 

 solution is too dark to be read in the instrument, dilute with a concentrated sugar 

 solution. Water should never be used for this purpose. Mix weighed amounts 

 of the solution under examination and a solution of pure sugar of about the same 

 strength, and obtain the amount of dry substance in the former by the following 

 formula: 



