433 
Amylacetate */,,,. N. sol.: + '°®/,, 1 °/, aethylalcohol. + *°°/,, 
Thymol sol. (sat.). aes is in EE 
Toluol (dil. sol.) 1007 vo B ae 
Artificial Moschus (dil.) + °/., 20 °/, ‘3 = 8 
1°/, Amylalcohol EAR 
Indol. sol. (dil.) 1097 Bornylacetate (sat) + ‘*°/,, 
Enecalyptol (sat) en Campliór! sol. in ,, )a— Pes 
Safrol (sat.) 100), __Capronie acid sol. ie 
Citrol (sat.) Se Fe Acetic acid '/,°/, sol. + *°/,, 
” ies ” a hee 
From this it appears that most odorous substances increase the 
positive charge of the water. Only bornylacetate and camphor two 
substances closely allied as to smell, lower, resp. reverse, the charge. 
The odorous substances that belong to the acids, lessen the 
charge of the water, just as all other acids do. | 
Finally very strong concentrations of odorous substances, such 
as we can procure with aethylaleohol, will lessen the charge or 
will even produce a negative charge, just as is the case with 
spray-electricity. 
When passing on to gustatory substances we found, that on the 
one hand all sweet substances are more or less reinforcing. though 
the concentration must be stronger than in the case of odorous 
substances, and that, on the other hand, all salts and acids lessen 
water-electricity, while such bitter substances as belong to the 
electrolytes, also lessened it. 
Bitter substances, however, that must be classed under the col- 
loidal substances again raised the positive charge of water, just as 
all the other colloidal substances examined. 
Sweet substances. Bitter substances. 
saccharose 1°/,:-+7°/,, Chinin pur (sat. sol.). — °°/,, 
Laevulose 1 °/,: + '°/,, Bisulj. chin. 1/0, 
Glucose ede Ol ss Chloret. magnes 1 °/, — ''/,, 
1, Se cre elle Sulfas natricus Hsen, 
pacel. lactis 1°/,:--°"°/,, Chloret. plumb. he = bales 
Glucoc@ll - */,°/,: + **"/,,. 
Glycerin een idd (es Colloidal Bitter substances. 
Fel Tauri hed + en 
Extr. quassiae sicc. ‘/,,.: + '°°/,, 
Glucochol. acid natr. '/,,,,: + °°/,,- 
