112 
Journal of the Mitchell Society [ November 
Temperatures 
172-175 
175-180 
180-185 
185-+ 
Per Cent of Distillate 
27.4 
57.0 
8.4 
7.2 
The limoene was identified byconversion into the tetrabromide. 
The Character of the Compound Formed by the Addition 
of Ammonia to Ethyl-phospho-platino Chloride, by Chas. H. 
Hertv and R. 0. E. Davis. Jour. Am. Chem. Soc., vol. 30, p. 
1084. July 1908. 
failed. On each attempt, following closely Rosenheim’s directions, 
rine in this compound can be precipitated by silver nitrate. 
Determinations of its molecular conductivity show close agreement 
with analagous di-ionic, complex ammonia compounds studied by 
Werner, Miolati and Herty. The character of the compound 
agrees fully with the co-ordination hypothesis of Werner. 
Corrosion of Iron, by R. O. E. Davis. Ch. Eng., vol. 5, p. 
174. 1908. 
The corrosion of iron in explained by different workers in sev- 
eral different ways, but the main discussion is whether it is oxygen 
or carbon dioxide that is essential to rusting. Experiments were 
devised to determine this point, from which the conclusion is 
drawn that corrosion of iron takes place with water and oxygen 
but not with water and carbon dioxide. The presence of carbon 
dioxide may accelerate the reaction but is not essential to it. 
The Optical Rotation of Spirits of Turpentine, by Chas. 
H. Hertv. Jour. Am Chem. Soc., vol. 30, p. 863. May 1908. 
The results of this investigation were obtained from oleo -resins 
from individual trees in Florida of Pinus Palustris and Pinus Heter- 
Efforts to prepare Rosenheim’s Salt 
i Cl I 
the salt -\ Pt (NH 3 \ r Cl was obtained. Only half of the chlo- 
( P(OC.H s ), ) 
