Miscellanies. 423 



substitute, in delivering the chemical lectures in the laboratory 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 tlie 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 after his return his 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 several 

 valuable articles, and some of his papers are inserted in this Jour- 

 nal. His reputation as a scientific and practical chemist was so ex- 



