54 Chemical Examination of the FoUen 



molasses ; its taste was sourer, and at the same time nau- 

 seous. 



The matter produced from the evaporation of the washing 

 of the pollen, agitated with alcohol, did not communicate 

 any colour to it in the cold, although left a long time in 

 contact with this liquid : but on the addition of heat, a part 

 of this substance was combined with the alcohol, and gave 

 it a very deep colour. 



The part of the residue insoluble in alcohol then appeared 

 less coloured, and was thicker than before ; it was easily 

 dissolved in water, and at the same time deposited a grayish 

 matter in abundance ; its taste was much less acid, and had 

 a kind of putridity and mucilaginous viscosity. The pro- 

 duce of the aqueous ley of the evaporated pollen was 

 therefore separated by the alcohol and water, applied suc- 

 cessively in three substances ; the one soluble in alcohol, 

 the other soluble in water, and the third not soluble in either. 

 We shall resume the examination of these substances, in 

 order to determine their nature. 



The alcoholic solution evaporated to the consistence of a 

 soft extract, had in this state a fine red colour, a smell of 

 boiled apples, a taste strongly acid, but sensibly disagreeable 

 latterly. 



It was easily and abundantly dissolved in water; it red- 

 dened turnsole tincture, made an effervescence with solu- 

 tions of the alkaline carbonates, slightly precipitated lime- 

 water in Yellowish white flakes, which were dissolved in a 

 new quantity of the acid liquor. It must be observed that 

 this matter thus separated by the alcohol, precipitated lime 

 much less than the first aqueous ley of the pollen ; but uni- 

 ted to lime-water to the point of saturation, the liquor pre- 

 sented in a few days at its surface a considerable quantity of 

 insipid prismatic crystals soluble without effervescence in the 

 muriatic acid. 



The solution of the alcoholic residue in water precipitated 

 also the acetite of lead in yellowish flakes which are dissolved 

 in the acetic acid ; nitrate of mercury a little oxygenated 

 experienced the same effect. 



Alihourh the preceding experiments seem to prove that 



the 



