]Q4 ACTION Of CHLORINE ON Olt OF TUBrENTINB. 



the tube, and bottom of the tin vessel j and that less steam 

 being produced when the mouth of the tube was downwards, 

 and the film less extensive, the internal fluid did not stand so 

 high. 3. That it would have stood higher, if there had been 

 a side aperture j because this would have caused a rapid access 

 of new water to the film, and carried all the bubbles inwards. 

 4. That upon raising the tube, the film lost its thinness, and the 

 effect ceased. 5. That the effect wts less when the exterior 

 fluid was rendered lighter by strong boiling, which filled it with 

 steam-bubbles. 6. And that the cold tube produced no effect, 

 but required to be first heated to the boiling point, before any 

 «team could.be produced in contact with it. 



V. 



On the Comlination of Chlorine with Oil of Turpentine. In a 

 Letter from Mr, K. Pokrett, jun» 



To Mr. Nicholson. 



SIR, Tower, Oct. 2, 1812. 



I Have just read Mr. John Davy's paper, published on the 

 «.eiercnce lo ^^^ of last month, in No. 151 of your Journal, on the 



Mr. J. Davy's combination of chlorine j and my attention was particularly en- 

 Cbav and^oil S^S^^ ^V *^^^ P^"^^ °^ '•■ ^" which he mentions an experiment 

 of turpentine, of his on the action of Libavius's liquid, or stannanea, on oil 

 of turpentine, and states, that the oil became viscid, less volatile 

 than before ; that it had little taste or smell } and that its solu- 

 tion in alcohol, when dropped into water, occasioned a cloudi- 

 ness in that fluid. 

 Analogous ex- This experiment of Mr. J. Davy's recalled to my mind some 

 P^"|"^"^®^°'"" analogous experiments which I made long before his, and in 

 by the author, which I formed, as I have some reason for believing, a similar 

 fluid to that obtained by Mr, J. Davy j and as that gentleman 

 expresses a wish, that a subject so curious might engage the 

 attention of chemists, I think this a fit opportunity for request- 

 ing your insertion of those experiments in your valuable Jour- 

 nal. Imperfect as they are, they may thus afford some infor* 

 mation, and will become more generally known than they can 

 ~ be by the communications of them which I have made in con- 



versatioH 



