124 
WILLIAM SMITH : HIS MAPS AND MEMOIRS 
numbered i.-xv. in Koman numerals, to correspond with the numerals 
on the sheets of the large map. It measures 14|- by 19 J inches, though 
it is printed on paper to correspond in size with the other fifteen sheets. 
Some idea of the amount of work connected with these maps 
may be gathered from the following extract from Smith's diary : — * 
" May 14, 1815. — Began at nine in the morning with an artist to 
colour for me the first printed copy of the * Map of the Strata ' on 
canvas. 
" May 22, 1815.— Finished colouring t\iQ first ' Map of the Strata ' 
on canvas. 
" May 23, 1815. — Attended a meeting of the Board of Agriculture 
with the first finished copy on canvas of my ' Map of the Strata.' "| 
This was the map for which the Society of Arts awarded Smith 
the premium of £50. 
1815. 
Smith's second book appeared nine years after his " Treatise on 
Irrigation," the same year in which his large coloured Geological map 
was issued. The volume is entitled : " A Memoir / to the / Map and 
Delineation / of the / Strata / of / England and Wales, / with part of / 
Scotland. / By / William Smith, / Engineer and Mineral Surveyor. / 
London : / Printed for John Gary No. 181, Strand. / 1815. 
The dedication reads : "To the Eight Honourable Sir Joseph 
Banks, Bart., President of the Royal Society, and the most general 
promoter of science ; this work, by his particular encouragement 
advanced to its present state of perfection, [i]s most gratefully and 
respectfully Dedicated, by his obliged humble servant, William Smith. 
London, August 1, 1815." Then follows a list of about 400 subscribers 
to the work. 
* Phillips's Memoirs, p. 77. 
f That Smith was familiar with the value of plants in geological 
mapping is shown from the following extract from a letter to the Rev. 
B. Richardson, dated Feb. 11th, 1813: — "As the season for a revival 
of the locality of indigenous plants is just approaching, I hope you will 
not forget to make a complete list of them on each stratum. This, 
with your able assistance, would form a most interesting chapter, and 
would serve to draw the attention of many to the subject of strata who 
probably might otherwise never think of it." — Memoirs, p. 75. 
