122 MEMOIR ON THE 



was moderately vifcid, and had a fiiint fweetifti animal 

 •odour, and a faccharine tafte, perceptibly acrid to the 

 lips. The matter which remained on the filter, was 

 fimilar, in colour and coniiftence, to Venice treackle. 

 It was weakly glutinous, and had the fame odour as 

 the yellow-coloured fluid. When this lubftance was 

 drv, it weighed thirty grains. It was friable, and not 

 of fo black a colour as imm.ediately after being removed 

 from the hlter. When this matter was obtained by 

 evaporating the black vomit over a moderate heat, it was 

 brittle and Ihining, but had no peculiar tafte or fmell ; 

 and, v\'hen expofed to a moift atmofphere, became foft 

 and glutinous. 



((?) Eight drachms of the filtered fluid (No. i.) was 

 evaporated in a fh allow veflTel, by a gentle heat : the va- 

 pour being condenfed, was found to coniifl: of water, 

 which tafted neither acid nor alkaline ; but emitted a 

 ftronp- odour of the vomit. The evaporation being con- 

 tinued until an adhehve refiduum remained of a dark 

 colour, refembling melted lugar. This fubftance a{fe»St- 

 ed the lips in a more obvioufly acrid manner than 

 the fluid did previous to the evaporation. It was highly 

 inflammable when dried, but not entirely foluble in 

 water. 



[6) Six drachms of the filtered fluid (No, i.) and as 

 many of water, were expofed in feparate phials, cloiely 

 corked, to an atmofphere, when the mercury, in the 

 thermometer, was as low as 25*^. The filtered fluid 

 conrrealed as foon as the water. The two different flu- 

 ids were examined, after ftanding a whole night j when 

 the phial, containing the coloured fluid, was found entire, 

 and its contents not quite frozen ; as, a part of the fluid, 

 on placing the phial on its fide, flowed among the 

 ice. The water, in the other phial, was completely 

 frozen, and the vcflel broken in pieces. 'J"he ice, in 



the 



