112 
WILLIAM SMITH : HIS MAPS AND MEMOIRS 
of Wet Lands, which he is now practising in different parts of the 
kingdom, in the fullest confidence of being able to effect a complete 
cure on the most difl&cult subject of experiment." 
On page four are the following " Conditions." The Work will 
be comprized in One Volume^ 4to. Price, to subscribers, Two Guineas ; 
to be paid on the delivery of the Work, which ^nll be published in 
November next. 
The subject of discussion will be arranged under the separate 
heads of Sand, Chalk, Free-Stone, Coal, &c., &c., in the same succession 
as they are found in the earth. 
" A correct map of the strata will be given ; describing the general 
course and width of each Stratum on the surface ; accompanied by a 
General Section, shewing their proportion, dip and direction ; and 
referring to the Map by corresponding numbers and proper explanations. 
" The Maps and Sections, to make them more striking and just 
representations of Nature, will be all given in the proper colours." 
The Prospectus in the Geological Society's possession bears the 
following inscription in Smith's own handwriting : " An Original. 
Presented to the Geological Society, February 18th, 1831, by Wm. 
Smith." 
The proposed work was not issued, principally through the failure 
•f the publisher, Debrett. Part of it was incorporated in the Strati- 
graphical System of Organised Fossils, 1817," on the title page of the 
Geological Society's copy of which the Prospectus, the only one I have 
been able to find, is pasted. 
MAP OF SOMEKSET^^HIKE, 1805. 
In this year Smith had completed a large and detailed Map of 
Somersetshire, and it was publicly exhibited and described at meetings 
of the Agricultural Society, etc. It was also shown in a form not quite 
80 advanced, at a meeting of the Agricultural Society at Bath in 1799. 
Unfortunately this map is lost. 
" TREATISE ON IRRIGATION," 1806. 
On the title page of Smith's Strata Identified by Organised 
Fossils " (1816) reference is made to his book " A Treatise on Irrigation.'* 
This work at first I had great difficulty in tracing. I was told that 
