PROF. JAMES D. DANA. 365 



my of Natural Sciences, of Philadelphia, Mr. Dana has contributed 

 various important memoirs. 



Soon after the resignation by Prof. Silliman of the chair of Chem- 

 istry and Geology in Yale College, Mr. Dana entered, in 1835, on the 

 duties of the office of Silliman Professor of Natural History and Ge- 

 ology in that institution, to which place he had been elected in 1850 ; 

 his brother-in-law, Prof. Benjamin Silliman, Jr., having been appointed 

 to the chair of Chemistry. Prof. Dana is now engaged in discharging 

 the duties of his professorship, and in editing the American Journal 

 of Science. 



In 1854 he was elected president of the American Association for 

 the Advancement of Science, having been for many years one of the 

 Standing Committee of that body; and in August, 1855, he delivered 

 the annual address before that Association at its meeting in Providence. 



Besides the works already referred to, Prof. Dana is the author of 

 the following publications: "Manual of Mineralogy," 432 pp., 12mo. 

 New Haven, 1851. 2d ed., 1857. "Manual of Geology," 1862. Rev. 

 ed., 1869. 800 pp. " On Coral Reefs and Islands." 8 vo, 144 pp. New 

 York, 1853. 



Mr. Dana's more important papers, in the American Journal of 

 Science and Arts, are : 



First Series, vol. xxx., 275, "On the Formation of Twin Crys- 

 tals." xxxiv., 225, " Anatomy of the Caligus Americanus." xlv., 131, 

 310, "Areas of Subsidence in the Pacific indicated by the Distribu- 

 tion of Coral Reefs and Islands." xlix., 49, " Origin of the Constit- 

 uent and Adventitious Minerals of Trap-rocks." 



Second Series, ii., 335, " On the Volcanoes of the Moon." iii., 

 94, 176, 381 ; iv., 88, "On the Geological Effects of the Earth's Con- 

 traction and Origin of Continents." iv., 364; v., 100, "On Cohesive 

 Attraction." ix., 220, 407, " On Isomorphism and Atomic Volume in 

 some Mfnerals." xvi., 153, 314, "Isothermal Chart of the Ocean." 

 xvii., 35, 210, 430, " Homceomorphism among Minerals." xviii., 85, 

 131, " Homoeomorphism of Minerals of the Trimetric System." xviii., 

 314; xix., 6; xx., 168, 349, " Geographical Distribution of Crustacea." 

 xxii., 305, 335, "Plan of Development in American Geological His- 

 tory." xxv., " On Cephalization." Continued in vols, xxxv., xxxvi., 

 xxxvii., and xli. xliv., 89, 252,398, " Connection between Crystalline 

 Form and Chemical Constitution." 



Third Series, i., 1 ; ii., 233, 305, 324, " On Glacial Phenomena 

 in New England, and the Source of the New England Glacier." 



In 1856-57 Prof. Dana published, in the Bibliotheca Sacra, a series 

 of four articles, entitled " Science and the Bible," called forth by a 

 work of Prof. Tayler Lewis, on the " Six Days of Creation." 



Prof. Dana's last work, "Corals and Coral Islands," 398 pages, with 

 279 cuts, is just published (1872). 



