WILLIAM SMITH : HIS MAPS AND MEMOIRS 
13S 
called Grey Chalk (pp. 9-10) ; Class of Strata beneath the Chalk (p. 11) ; 
Green or Chlorite Sand (p. 12) ; Micaceous Brick Earth (p. 13) ; [page 
14 blank] ; Portland Stone (pp. 15-16) ; Oak Tree Clay (pp. 17-18) ; 
Coral Kag and Pisolite (pp. 19-20) ; " Clunch Clay and Shale (pp. 21-22) ; 
Kelloways Stone (pp. 23-24) ; Cornbrash (pp. 25-26) ; Forest Marble 
(pp. 27-28) ; Clay over the Upper Oolite (p. 29) ; Upper Oolite, or 
Calcareous Freestone (pp. 29-30) ; Fuller's Earth Eock (pp. 31-32). 
The series ends here, somewhat abruptly. 
The plates are very beautifully drawn and coloured, apparently 
by Sowerby, though no reference to this fact appears to occur in the 
book. They are printed on tinted papers, carefully selected to match 
the colour of the respective rocks. Where it has not been possible to 
match the colour exactly, white paper has been tinted the required 
colour, before the drawings have been made. There are nineteen in 
all (unnumbered), as under : — 
(1) Tooth of Mastodon. 
(2) London Clay Fossils.* 
(3) Craig (sic). 
(4) Upper Chalk.t . 
(5) Lower Chalk. 
(6) Green Sand. , , 
(7) Ditto. 
(8) Brick Earth. 
(9) Portland Stone. 
(10) Oak-Tree Clay. 
(11) Coral Rag and Pisolite. 
(12) Ditto. 
(13) Clunch Clay and Shale. 
(14) Kelloways Stone. 
(15) Cornbrash. 
(16) Forest Marble. 
(17) Clay over the Upper Oolite. 
(18) Upper Oolite. 
(19) Fuller's Earth Eock. 
The copy in the library of the London Geological Society is identical 
* This plate has the words " Brit. Min., 246,'' evidently a reference 
to Sowerby's book. 
t Reproduced on Plate XII. 
