AZTXIYERSARY ADDRESS OF THE PRESIDENT. 



47 



Other important papers on stratigraphical geology which he contri- 

 buted to our Journal were those on the correlation of the several sub- 

 divisions of the Inferior Oolite in the Middle and South of England, 

 and on the older rocks of South Devon and Cornwall. He also 

 published a number of papers on fossil sponges and Entomostraca, 

 the latter with the cooperation of Professor T. Rupert Jones. 



When ill-health prevented him from continuing his work among 

 he Eieid-Clubs of the west of England, of which he had so long- 

 been a most active member, he retired to his native town, still with 

 microscope and pencil carrying on his labours among the minute 

 fossils which he had studied with such loving care. 



Dr. Holl succumbed to the effects of heart-disease on September 

 1 1th, 1886, and in him we have to mourn the loss of one who has 

 greatly contributed to the advance of geological knowledge in a 

 number of widely different fields. 



In Mr. Caleb Evans we have lost another of those hard-working 

 amateurs to whose exertions the advance of geological science has 

 been so largely due. He was born in July 1831, and educated at 

 University College School. He lost his father while still young, and 

 after being educated as a solicitor, received in the year 1852 an 

 appointment in the Chancery Pay Office, which he retained till 1882, 

 when compelled to retire through ill-health. Mr. Evans was a 

 remarkable example of what can be accomplished by an ardent 

 student of Nature, even when his lot in life happens to be cast in 

 the heart of this human wilderness of London. Having taken up 

 the study of geology in 1855, he found among the excavations for 

 the new sewers in this city, and in unfinished cuttings of railways 

 leading from it, abundant opportunities for the collection and study 

 of fossils, supplementing this work by researches carried on at the 

 seaside during his vacations. In this way he accumulated a large 

 and valuable collection, some important type specimens from which 

 were bequeathed by him to this Society. He took a very active 

 part in the work of that very useful body the Geologists' Association, 

 of which he was one of the earliest members, and to its Proceedings 

 nearly all his papers were communicated. His most notable con- 

 tribution to geological literature was the well-known paper " On 

 some sections of Chalk between Croydon and Oxtead, with Obser- 

 vations on the Classification of the Chalk," in which there was made 

 the first attempt in this country to base a classification of the beds 

 of the Chalk upon palaeontological data. This memoir, which 



