116 REPORTS ON THE STATE OF SCIENCE.—1912. 
place in solutions of two crystalline derivatives of camphorcarboxylic 
acid (the amide and piperidide), which were first prepared and examined 
about four years ago by Dr. Glover. The changes of rotatory power 
which take place in the freshly prepared solutions are extremely com- 
plex. In solutions of the piperidide in benzene, a period of induction is 
followed by two periods of acceleration and two periods of retardation 
in the rate of change of rotatory power; the changes can only be ex- 
plained by assuming that three distinct isomeric changes take place, 
and that a condition of equilibrium is ultimately established between 
four distinct isomerides. 
Measurements of solubility have shown that in the case of each 
substance a proportion amounting to about one-third persists in the 
original form when a condition of equilibrium is finally attained to. 
In purifying the two substances it was found to be almost impossible 
to secure homogeneous material until they were separated in the form 
of measurable crystals from solutions in ethylic acetate. A remarkable 
morphotropic relationship was detected between the amide 
ya ae 
Oran ae 
and a-benzoyl camphor 
fER.CO.CeHs 
CoH | 
CO 
An investigation of the equations for two consecutive unimolecular 
changes has already been published;! and a detailed account of the 
experiments referred to above will be published at an early date. 
The Committee ask for reappointment and for a grant of 301. as in 
the preceding year. 
The Transformation of Aromatic Nitroamines and Allied Sub- 
stances, and its Relation to Substitution in Benzene Deriva- 
tives.—Report of the Committee, consisting of Professor F. S. 
Kiprine (Chairman), Professor K. J. P. Orton (Secretary), 
Dr. 8. RuHEeMANN, and Dr. J. T. Hewirr. 
I. The Conversion of Chloro-, Bromo- and Nitro-aminobenzenes into 
Substituted Anilines. 
In the recent reports of this Committee, the results of work on the 
transformation of chloro- and bromo-aminobenzenes into halogen- 
anilides, and of nitroaminobenzenes into nitroanilines has been com- 
municated. In the case of the former compounds, it has been shown 
that the transformation is not an intramolecular change but consists 
? Trans. Chem. Soc., 1910, 97, 2634-2645. 
