1808-1822.] 
GEOLOGICAL MAPS. 
15 
In another letter, dated Corpus Christi College, April 
29th, 1814, he writes to Conybeare :— 
“ The publication of Smith’s map, which I sent for 
yesterday, will preclude the necessity of my giving you 
any trouble in finishing that which you had begun to 
colour for me. I have prepared and coloured sections 
of the country round Oxford, and of the whole system 
of the detail of the stratification of your grand section ; 
for the last week I have been unpacking a barrel per 
day, and have made considerable progress in the arrange¬ 
ment of the lower strata, assisted by Scrle, who before 
his departure last week disposed of the metals. 
“ I send you by the coach a parcel containing two maps 
of mine and three of your own. If you can possibly find 
time, before Saturday in next week, to lay in the great 
outlines of the mountain chains of Europe as you had 
made them out in the map you took to town, I shall be 
thankful if you forward it me by Saturday the- Jth ; as 
this is a matter of the first importance to me, you will, I 
trust, have the goodness to take it in hand first. With this 
you will send me back the map of North America, having 
written in the corner of it the explanation of the colours. 
At your leisure you will much oblige me by inserting in 
your map of France an outline of the chalk with its 
superior formation, of the groups of granite and other 
rocks which you know in that country. I send with it your 
map, which, from the lines inscribed on it, appears to 
contain much of the requisite information, and add your 
coloured map of the Netherlands, which will assist you in 
the process. Have you taken to town your sketches of 
the coast at the Giants’ Causeway, as they would be of 
much service to illustrate the doctrine of subsidences ? 
Pray send them me, if they are not in Oxford. I suppose 
you have had no leisure to think of Moses or Creation ? ” 
His enthusiasm was infectious. Not only was he assisted 
in these map surveys by his friends Conybeare, De la 
