Anahjis of the Honey -fane, or Mell'ite. 329 



oF charcoal of venous blood ; and to decompofe the fame 

 quantity of nitre, required 119 grains of charcoal of arterial 

 blood. This experiment, indeed, was not very correel, be- 

 caufe a very light part of the charcoal was diffipated like dull. 



7th, I feparated the red part of the blood from the ferum 

 and fibrous part, as completely as poffible, by the means 

 commonly employed ; and after drying it, I tried it by nitre. 

 To :.lkalife 480 grains of nitre, required 130 grains of this red 

 part of the blood. 



8th, To alkalife by detonation 480 grains of nitre, required 

 202 grains of the fibrous part feparated from the ferum ; and 

 yet with this part the nitre detonated more brifkly than with 

 the other parts of the blood. 



IX. Analyjis of the Honey -Jlone, or Mell'ite. By 

 C. Vauquelin*. 



X H E analyfes of this ftone given by Abjch and Lampa- 

 dius are well known. The former obtained from 100 parts 

 of it, 16 of carbonat of alumine, 4 of carbon, 3 of the oxide, 

 of iron, 40 of carbonic acid, 28 of the water of crvftailifation 

 having the fmell of bitter almonds, and $•$ of naphtha. 



The latter had for refult 86-4 of carbon f, 3*5 of petro- 

 leum, 2 of lilexj and 3 of the water of cryftallifation ; which 

 makes an enormous difference. 



Mr. Abich, confidering the incombuftibility of the mel- 

 lite, propofes to remove it from the clafs of combultibles, 

 and to place it in that of the incombuftibles. But Profeflbr 

 JClaproth, whofe labours are entitled to the greateft confi- 

 dence, informed me feveral months ago that he found thi* 



* Annate; de Cbimie, No. 107. 



f If M. Lampadius operated on the fame fubftance as that which M. 

 Abich and I analyfcd,it is impoflible that he fhould have obtained 86-4 of 

 1 j for, in 40 of carbonic acid and 4 of carbon, obtained bv M. Abich, 

 theic was not a fufficiency to form 86 of carbon ; and as it appears from 

 my analytis that there is nor more than 55 per cent, of real acid in honey-- 

 ftone, it is evident that 36 of carbon cannot be extracted from it. M. Lam- 

 padius therefore mull have operated in another manner, or did notemploy 

 Jieitt ftjfficicnt to anaiyie tl(c acid, if the lubitance he analyftd was really 

 {joney-ftone. 



pretended 



