158 REPORTS ON INVESTIGATIONS AND PROJECTS. 



benzylamine, methylamine, and nitrotoluidine. Diethylamine and 

 dimethylamine yield compounds resembling the second of the above 

 classes, but containing the elements of an additional molecule of 

 water. Interesting derivatives were also obtained from benzam- 

 idine and benzidine. Several compounds were prepared from semi- 

 carbazine, but their constitution has not j-et been fully worked out. 

 The action of acylating agents on certain of the substances described 

 in the paper was also investigated. The results confirm the formulae 

 for them which were previously regarded as being the most probable. 

 A number of amines entirely failed to react with camphoroxalic 

 acid : evidence is being sought as to the cause of this behavior. 



Washington, Henry S., Locust, New Jersey. Grant No. 95. Chem- 

 ical investigation of igneous rocks. (For first report see Year Book 

 No. 3, p. 113.) $r,2oo. 



Abstract of Report. — -Since submitting his last report Dr. Washing- 

 ton has continued his chemical work on the rocks of the Bolsena- 

 Vesuvius line of volcanoes, and has made fifty complete chemical 

 analyses in accordance with the plan previously outlined. Along with 

 this a careful microscopic study of the rocks was undertaken, involv- 

 ing very numerous measurements of the quantitative mineralogical 

 relations in thin section. The observations and the conclusions to 

 be drawn from these chemical and miscroscopical studies have been 

 embodied in a monograph. 



In May Dr. Washington sailed for Gibraltar, visited Madrid first, 

 and then proceeded to Gerona and Olot, where a detailed study of the 

 complex of small volcanoes of this little-known region was made and 

 an ample collection of the various occurrences gathered for future 

 study with the microscope and by chemical analysis. The visit to the 

 region also enabled him to gain an insight into the general structure 

 of the volcanic district which has hitherto been somewhat obscure. 



After the completion of his examination of the Olot district, he vis- 

 ited the locality of the so-called corsite (Kugeldiorit) in the southern 

 part of Corsica. Specimens of the rock of this locality are to be found 

 in most collections, but no modern study of it has yet been made. The 

 occurrence is small in extent, but abundant material was collected for 

 future microscopical and chemical study, which it is hoped will throw 

 some light on the origin of this peculiar rock texture, of which few 

 examples are known. 



After a journey to the north of Italy he visited Rieti in the Abruzzi, 

 where an intrusive rock of a very exceptional character occurs. Of 

 this peculiar rock little is known and no good analysis exists. The 



