be made on a later page. As he was fond 

 of constructing his own apparatus, his 

 rooms at Queens' with all his implements 

 and machinery would sometimes wear the 

 look of a workshop, and were no doubt 

 the theme of much amused wonderment 

 among both Fellows and undergraduates. 

 But these mechanical operations and 

 experiments indoors were only a part of 

 the scientific occupations with which he 

 employed his leisure. As above stated, 

 there can be no doubt that he was in the 

 habit of making what would now be 

 called geological excursions, in which he 

 interested himself in noting the distri- 

 bution and sequence of the rock-forma- 

 tions in the southern counties of England. 

 It was only by such practical field-work 

 that he could gain the remarkably accu- 

 rate conception of the structure of the 

 stratified portion of the earth's crust em- 

 bodied in his Earthquake paper of 1760. 

 This epoch-making essay was read to the 

 Royal Society in sections at five successive 



9 



