LINNEAN SOCIETY OF LONDON. I05 



of four children ; he received his early education at Swansea 

 Grammar School, ending by his becoming " head boy." 



During his school-days he began to collect shells on the shore 

 of Swansea Bay ; and Mr. Griffiths, his schoolmaster, Mr. Dill- 

 wyn, and other friends having encouraged him, he made it a 

 regular pursuit. At seventeen he was articled to a solicitor in 

 his native town, but gave his spare time to dredging on the coast. 

 In 1828, when only nineteen, he sent a paper to this Society, 

 being a " Synopsis of the Pulmobranchous Mollusca of Great 

 Britain," which is printed in our ' Transactions,' occupying 

 60 pages. In 1836 he attended the Bristol Meeting of the 

 British Association, and there met Prof. E. Forbes. For 

 many years he continued a constant attendent of the Annual 

 Meetings of the Association, being Local Treasurer at Swansea 

 in 1848, President of the Biological Section in 1877 at Plymouth, 

 and Vice-President of tlie Association at its second visit to his 

 native town in 1880. 



He entered into business as solicitor in Swansea, and married 

 a daughter of Mr. E. J. Nevill, of Llangenneck Park, but still 

 prosecuted his labours, first with a row-boat, afterwards with a 

 yacht, the ' Osprey,' which he purchased expressly. He removed 

 to London, and was called to the bar in 1856 with a view to 

 London practice, but finally retired from the legal profession in 

 1866 and removed to Ware Priory. In 1862 the first volume of 

 his valuable manual, ' British Conchology,' came out, in due time 

 followed by four others, ending in 1869. 



Hit-herto his dredging operations had been within 200 fathoms ; 

 but during the cruise of the ' Lightning,' in 1868, a successful 

 haul had been made from 650 fathoms. The ' Porcupine ' was 

 in 1869 fitted up for deeper exploration, and Gwyn Jeffreys un- 

 dertook the superintendence of the scientific portion, as his co- 

 adjutors, Sir Wyville Thomson and Dr. Carpenter, were engaged 

 in official duties during the eai'ly part of the season. The dredge 

 was successfully worked at the then unprecedented depth of 1-176 

 fathoms, thus paving the way for the greater exploit in tlie next 

 cruise of 2435 fathoms. The Report of the Cruise was drawn 

 up by Jeftreys, and presented to the Royal Society, some of the 

 results being of the greatest importance and interest. 



The second ' Porcupine ' expedition was also generalled by 

 Gwyn Jefl:reys ; the coast of Portugal being specially investigated. 

 In 1871 he visited the United States, and in 1875 he saw to the 

 outfit of the ' Valorous,' and reported on her cruise. In 1880 lie 

 engaged in his last deep-sea dredging, in the l!"Vench inquiry, in 

 the Bay of Biscay, in ' Le Travailleur.' 



His wife died in 1881, and Dr. Gwyn Jeffreys removed from 

 "Ware to Kensington, where he died Jan. 24, 1885, from apoplexy ; 

 the previous evening he had attended a lecture given by his son- 

 in-law, Prof. Moseley, at the Royal Institution. 



He was elected Fellow 7th Dec. 1865, and Treasurer to the 



