ON THE ANIMAL FLUIDS. 49 



6? Oxide of iron ? I think proper to speak of this result at 

 this time because it was published anonymously, and be* 

 cause subsequently to its publication I find it has been 

 mentioned by other persons without acknowledgement, or 

 at least without knowledge of this fact. 



5. I foui'd also indications of earonate of lime and of Silex, and car- 

 silica, not enumerated by Dr. Marcet. Future experiments 



must furnish unequivocal evidence. 



6. Muriate of potash asserted by the author, instead of Muriate of 

 potash united to animal matter, or to some other destructible P otash * 

 substance, as I have inferred. On this question perhaps 



more than necessary has been already said in the present and 

 former papers. 



7. Subcarbonate of soda, asserted by the author, has been Subcarbonate 

 the subject of discussion at the same time as the last men- of sta- 

 tioned ingredient. 



8. Muriate of soda. Both parties agree in this being the Muriate of 

 chief saline impregnation, So< * a - 



It may be right to notice, that I have employed the term Self-coagula- 

 self-coagulable lymph, instead of the usual one coagnlable ble lvm P h - 

 lymph ; because the serum, another fluid of the blood, is 

 also coagulable, but not of itself without a certain tempera- 

 ture, or certain substances being mixed with it. The de- 

 posit spoken of by Dr. Marcet is not, I th-ink, as he sup- 

 poses, what I mean by the term self-coagulable lymph. 



Although, if the cause of truth require it, another com- Conclusion. 

 muuication may be offered; it will be most agreeable to 

 me, that it be not found necessary. Considering the er- 

 roneous inferences, with which the writings of chemistry by 

 men of the' greatest celebrity abound ; I shall on that ac- 

 count endeavour to find a source of consolation, if time 

 show, that I am the erring party. I hope too, that this 

 controversial discussion may serve to promulgate knowledge, 

 by inducing some persons to attend to the subject, who might 

 not other wise have known the original papers. If with these 

 reflections my respectable adversary can be satisfied, the / 

 controversy will now be terminated. 



if Claudite jam rivos pueri: sat prata biberurft". 

 George Street, Hanover Square, G. P. 



April the nth, 18 12. 



Vol. XXXII.— May, 1812. E VIII. 



