‎"HOPKINS, W.‎
‎Researches in Physical Geology. First- Second Series. Read January 17 and March 7, 1839. (1. On the Phenomena of Procession and Nutation, assuming the Fluidity of the Interior of the Earth - 2. On Procession and Nutation, assuming the Interior of the ...‎

‎(London, Richard and John E. Taylor, 1839). 4to. No wrappers as extracted from ""Philosophical Transactions"" 1839 - Part II a. 1840 - Part I. Pp. 381-423 a. pp. 193-208.‎

Reference : 45969

‎A pioneer-work in Physical Geology.""Hopkins became intensely interested in geology about 1833, after excursions with Adam Sedgwick near Barmouth, in northern Wales. He decided that he would place the physical aspects of geology on a firmer basis, would free it from unverified ideas, and ""support its theories upon clear mathematical demonstrations."" His mathematical models and propositions greatly impressed contemporary geologists, and in 1850 he was awarded the Wollaston Medal of the Geological Society of London for his application of mathematics to physics and geology.""DSB). ‎