118 Scientific Intelligence. 
. ether of pyrocatechin ©€,H, ae That the fraction boiling be- 
agra 200° and 203° was thus ee ee Marasse further proved 
fusing it with potassium hydrate. Two liquids were thus 
phiai ined which on examination proved to be cresol itself 
es & | outs and pyro-catechin €,H rs oS the latter produced 
b the saponification of its ether, guaiacol, in the experiment. 
The same-result was reached by acting upon this fraction with 
hydriodic acid ; cresol and pyro-catechin “bei eing produced as before, 
And finally, b y acting upon this fraction with methyl iodid and 
potassium hydrate in sealed tubes, the methyl ethers of both cresol 
ee ©. | ool .) and guaiacol (©, H rs Bell) wer 
obtat The last fraction, boiling between 217° and 220°, af- 
fo bdod, pe ecidabn with hydriodie acid and fractioning, phlorol, 
€H, 
© ,,0 & C,H, €H. and homo-pyro-catechin €,H, 6H, 
6 
which last substance was derived from creosol, its acid methyl 
ether €,H, Oeil 3 precisely as pyro-catechin was in the previous 
0H 
fraction, from guaiacol Marasse ann concludes that Rhenish 
beech-wood creosote is a mixture of ¢ mpounds belonging to two 
parallel series, me ie prenols and the acid methyl ethers of pyro-cate- 
chin and i ologues. And since the frst members of the 
series ib not etaias 1 in boiling point, the first member of the 
guaiacol series agreeing with the second member of the phenol 
series, it is obvious that that portion of creosote which boils at the 
lowest temperature will consist of the first member of the phenol 
series, i. e., phenol it 
Boiling 
point. Series, point. 
Phenol, € H,(@H) ROS ei a ua oe 
Cresol, €,H, ce 203° |Guaiacol, €,H «| OeH, 200° C. 
€H €H 
Phlorol, €,H, } on. 220° |Creosol, €,H .} 9¢ OOH, 219° 
OH 
All the different ane Ms Rgiores tae creosote appear to be identi- 
cal in composition se specimens having the highest boiling 
point, which contain che higher resin of these SS — ee 
Ann. Ch. Pharm., clii, 59, Oct., 
16. On Ocean Currents, in a to the Distribution ‘of Heat 
over the Globe, by JAMES Crott of the Geological Survey of Scot- 
lan ae (Phil. Mag. Feb. 1870.)—L The absolute Heating-power of 
sang * From an examination of the published sec- 
tions [of the Gulf Stream] some years ago,* I came to to the conclu- 
* Philosophical Magazine for February, 1867, p. 127. 
