Miscellanies. 423 
substitute, in delivering the chemical lectures in the anaes of 
Yale College, which is a sufficient evidence of the estimation in 
which he was held by that gentleman. 
In this course, he acquitted himself with his wonted ability, exhib- 
iting an accurate acquaintance with.the state of the science, while in 
the experimental illustrations he was ably assisted by Sherlock J. 
Andrews, Esq. then an experienced assistant in the department of 
chemistry, mineralogy and geology in Yale College, and now an em- 
inent lawyer in Cleaveland, Ohio. 
Mr. Chilton’s mind was early directed to inventions relating to 
science and the arts. He invented an hydrometer, which in accu- 
racy is thought to be superior to any other, and may probably be 
hereafter made known to the public. The account of his rain gage 
was published in this Journal, Vol. VII, p. 326. 
He constructed also a barometer, and some of these instruments 
have been sold and have given great satisfaction. A hydrographic 
map of his invention was pirated, and a patent taken out for it by 
some one who had no claim to it. 
He made various improvements in chemical as well as other ap- 
paratus. He was naturally possessed of a great deal of mechanical 
ingenuity, and owing to the difficulty of procuring, at that time, the 
necessary instruments, he himself constructed the whole of his beau- 
tiful philosophical and astronomical] apparatus. 
In July, 1834, Mr. C., for the benefit of his health, and also for 
professional improvement, made a visit to Europe, from whence he 
returned in August, 1835. He was favorably received by many of 
the scientific men of England, Scotland and France. He attended 
the meeting of the British Association, at Edinburgh, and prepared 
a paper for that learned body, which the celebrated Dalton volun- 
teered to present. 
Mr. C. appeared to be greatly improved in health by his visit to 
the old world, but shortly afier his return bis strength declined, and 
his old disease, which was hydrothorax, with an enlargement of the 
heart, returned, so that he was unable to attend to the duties of the 
laboratory. 
Although Mr. Chilton was a laborious chemist, and was accom- 
plished in his profession, he published but little. To the Mineralo- 
gical Journal of the late Dr. Bruce, he however contributed ager 
valuable articles, and some of his papers are inserted in this Jour- 
nal. His reputation as a scientific and practical chemist was so ex- 
