SKETCH OF BENJAMIN SILLIMAN 551 



Journal of Science and Arts," until the close of the first series of fifty 

 volumes of that journal in 1845. In 1846, M'ith the accession of Pro- 

 fessor James D. Dana, the management of the second series of that 

 journal devolved upon the younger editors. In the same year he was 

 appointed at Yale Professor of Chemistry applied to the Arts, the 

 first appointment in the " Fourth Department of Philosophy and the 

 Arts," then inaugurated, and which is more particularly mentioned 

 below. His " First Principles of Chemistry " appeared in this year, 

 of which over fifty thousand copies have been sold. He was a mem- 

 ber of the Common Council of the city of New Haven in 1845-'49. 

 In 1845-'46 he gave in New Orleans a course of lectures on agricul- 

 tural chemistry, upon the invitation of the leading professional and 

 commercial men of that city, and this, it is believed, was the first 

 course of lectures on that subject given in the United States. 



In 1849 he was elected to the chair of Medical Chemistry and 

 Toxicology in the Medical Department of Louisville University, at 

 that time in a highly prosperous condition, the duties of which be dis- 

 charged for five winters. In 1854 he resigned this chair, to take up 

 the instruction in chemistry in the Academical and Medical Depart- 

 ments at Yale, made vacant by the resignation of his father, the Ge- 

 ology and Mineralogy having been assigned to Professor Dana. This 

 instruction was given under the appointment to the chair of " General 

 and Applied Chemistry" (1854). He resigned his duties in the Aca- 

 demical Department in 1870. 



In 1858 he published " First Principles of Natural Philosophy or 

 Physics," and a second edition of the same in 1861. 



Mr. Silliman visited Europe with his father in 1851, and subse- 

 quently edited his father's "Visit to Europe in 1851," 2 vols.; the 

 work having been originally prepared for three volumes, it was cut 

 do^vTi to two volumes, to match the author's " Visit to England, Hol- 

 land, and Scotland, 1805." 



He visited California in March, 1864, returning in February, 1865, 

 and again in 1867 and 1872, being occupied with professional work in 

 the mines and in mineralogical and geological explorations. He de- 

 livered the annual oration before the College of California in 1867, 

 which has been published. 



Mr. Silliman has for some years been much occupied as a scientific 

 witness in the courts, having been employed m many important causes 

 in which scientific testimony and investigation were called for. His 

 aid has been also constantly invoked in various matters connected 

 with the practical aits, where a knowledge of scientific principles is in- 

 volved. 



In addition to the works named above, he has printed many me- 

 moirs upon various scientific and practical subjects, addresses and 

 opinions too numerous to mention, besides his original investigations, 

 recorded in the " American Journal of Science and Arts." 



