part lj ANNIVERSARY ADDRESS OF THE PRESIDENT. liii 



and Llandeilo Rocks of St. David's, which appeared in our 

 Quarterly Journal in 1875; and he published several other papers on 

 graptolites in the ' Geological Magazine ' between 1870 and 1SS1. 

 He also wrote much on the general geology of Hertfordshire, and 

 contributed several geological papers to the meetings of the British 

 Association. Through the Kay Society he published a ' Biblio- 

 graphy of the Tunicata ' (1918), and was part author (with 

 •J. Cash & G. H. Wailes) of a Monograph on ' British Freshwater 

 Rhizopoda,' of which three volumes have already been issued. But 

 it is in the Transactions of the Hertfordshire Natural History 

 Society that the scope and vigour of his scientific activity and 

 nature-lore are most strikingly apparent. Here are contained 

 annual reports from 1876 onwards, in which are given his con- 

 tinuous observations on the meteorology and phenology of the 

 county, together with the results of his prolonged studies of its 

 land-mollusca, birds, insects, bournes, scientific literature, and 

 history. He was, indeed, an unfailing authority on all scientific 

 matters pertaining to the county, and his information was placed 

 at the disposal of every earnest worker. The kindly deference of 

 his manner concealed a breadth of knowledge and culture which 

 long acquaintanceship alone could discover and appreciate. 1 



We shall all miss the kindly presence of Alfred Prentice 

 Young, Ph.D., whose constant attendance at the meetings of our 

 own and kindred Societies during many years made him personally 

 known to a wide circle of geologists. Dr. Young was born in 

 1841. and was educated at the Denmark Hill Grammar School, 

 Harvard College, and the Normal School of Science. In 1857 he 

 entered the Indian Navy as midshipman, and four years later was 

 transferred to the Bombay Marine Service, where he rose to the 

 rank of Commander. In 1861 he acted as Surveyor in the 

 Telegraph Expedition in the Persian Gulf, and in 1866 he was 

 engaged on the survey of Butcher's Island and adjacent shores. 

 Subsequently he was empkryed in- the Revenue Survey and Assess- 

 ment, being stationed mainly at Poona, but serving for some time 

 on Famine duty in Dharwar in 1877. At the time of his retire- 

 ment from the Indian service in 1893 he held the post of Acting 

 Superintendent on the Deccan Revenue Survey. His predilection 

 for geology appears to have been aroused in early life, and was 



1 An excellent photograph of John Hopkinson is reproduced in the 

 obituary notice in the ' Geological Magazine ' for September 1919. 



