55 



TABLE 58. Sirups. 



111 Table 58 the same comparison is made with sirups. In order that 

 the sirups might not occlude moisture a less quantity was taken than 

 of the juices, so that the total solid residue might be the same. The 

 mean increase in the case of sirups as determined by the Brix spin- 

 dle was 1.27 per cent. With sugars and molasses enough alcohol must 

 be added to the dish containing the sand and samples to dissolve the 

 latter thoroughly and distribute them evenly through all parts of 

 the sand. Not being quite satisfied with the result obtained by the 

 method given above, I tried the device of using paper coils for the ab- 

 sorption of the juices whose total solids were to be determined. 



The manipulation was as follows : A piece of thick filtering paper 40 

 centimeters in length and 5 to 8 centimeters wide was rolled into a coil 

 and tried at 105. While still hot it was placed in a dried weighing tube 

 and carfuliy stoppered. When cold it was weighed together with the 

 tube. 



About 2.5 grams of the juice is now placed in a small beaker cov- 

 ered with a watch glass and weighed. One end of the coil is dipped 

 into the beaker and held there until the juice is absorbed. By means 

 of the dry end, the coil is transferred to the air bath, placed in an up- 

 right position with the wet end up and dried for two hours at 100. 

 While still hot it is again placed in the weighing tube, and, when 

 cold, weighed. 



By re weighing the beaker and the cover the weight of juice taken 

 is accurately determined. The increase of weight of the coil gives the 

 total quantity of solid matter present in the weight of juice taken. 

 This method was introduced so late in the season that only a few trials 

 of it were made, but they were eminently satisfactory. The results are 

 given in Table No. 59 : 



TABLE No. 59 Total solids by drying on paper coils. 

 MILL JUICES. 



