■Professor J. W. Jucld, C.B. 391 



and this system during the next twenty-five years was gradually 

 developed with the co-operation of able students, who became his 

 assistants, among whom may be especially mentioned Professor Cole, 

 the late Mr. A. V. Jennings, Dr. W. F. Hume, Mr. T. H. Holland, 

 Dr. Evans, Dr. Cullis, and Professor Skeats. 



In 1878 Professor Judd married Jeannie Frances Jeyes, a niece 

 of his old friend and fellow- worker in the geology of the Midlands 

 — S. Sharp, Esq., F.S.A., F.G.S. In 1877 he was elected one of 

 the Secretaries of the Geological Society, and served that office for 

 ten years till he was elected President, during the years 1886 and 

 1887. He had received the Wollaston Fund in 1868, and in 1891 

 was awarded the Wollaston Medal. 



During nearly thirty years that he has been engaged in teaching, 

 only the Summer vacations have been available for field-work. But 

 in these vacations the igneous rocks of the Western Isles and other 

 parts of Scotland have been examined and the collections made 

 subsequently studied in the laboratory. The results have been 

 published in a series of petrographical memoirs in the Quarterly 

 Journal of the Geological Society. Teaching the science with 

 London as a centre, all questions concerning the geology of the 

 London Basin were naturally of special interest to him, and thus he 

 was led to the publication of papers on the geology of the London 

 and Hampshire Basins and the correlation of their strata. With the 

 aid of a pupil, the late Mr. Collett Homersham, he was able to study 

 the materials obtained in a deep boring at Richmond, and to show 

 that there, and also in the deep well at Meux boring in the 

 Tottenham Coui"t Road, richly fossiliferous deposits of Lower 

 Oolite age occur. 



One who has known Professor Judd for many years, and is 

 competent to judge of the value of his work as a geologist, writes : — 



"The breadth and accuracy of Judd's knowledge is the characteristic 

 which from the first has most impressed me. Trained in youth as 

 a practical chemist, well grounded at the Royal School of Mines 

 in physics and biology, early to appreciate the importance of the 

 microscope in the study of rocks, with his experience in the field as 

 a worker on the staff of the Geological Survey greatly widened by 

 study of some of the most interesting districts on the Continent, 

 he could deal with all sides of a problem, whether petrological, 

 or physical, or paleeontological, and he contrived, notwithstanding 

 the incessant demands of educational work in later years, to keep 

 well up to date in the literature of the science. He has made — and 

 this can be said of very few — valuable contributions to all depart- 

 ments of geology, and in proof of this I need only recall papers in 

 the Mineralogical Magazine, such as that on Scapolite, those in 

 this periodical on glacial questions and on volcanoes, afterwards 

 developed into his well-known book, those, chiefly in the Quarterly 

 Journal, in which he dispelled the fog which obscured our Neocomian 

 deposits, his memoir on the geology of Rutland, and the papers 

 on the west coast of Scotland, which, whether the verdict on one 

 point be ultimately for or against him, will always rank as classic. 



