/. 



9- 



h. 



0-66* 



1-46* 



0-87* 



42-98 



41-48 



42-57 



i trace. 





009 



0-08 



0-04 



0-08 



— 



— 



0-08 



65-24 



55-72 



55-18 



0-10 



0-06 



0-30 



0-06 



0-17 



0-22 



014 



002 



0-21 



0-74 



1-05 



0-40 



390 PROCEEDIlfGS OF THE GEOLOGICAL SOCIETY. [June 19 



Clay and sand insoluble in acids 2-04 



Silicic acid soluble in acids A trace. 



Carbonic acid 42-14 



Sulphuric acid 0*31 



Phosphoric acid 0-07 



Chlorine — 



Lime 54-37 



Magnesia 025 



Potash 0-08 



Soda 0-19 



Oxide of iron and alumina 0-55 



100-00 100-00 10000 100-00 



e. Analysis of Lower Chalk (No. 9), by Prof. Way. 

 /. Analysis of lower portion of Chalk with Flints, North Hants (No. 10), by 



Prof. Way. 

 a. Analysis of the Upper (soft, white, or free) Chalk, Odiham, North Hants 



(No. 11), by Prof. Way. 

 h. Second Analysis of the Upper (soft, white, or free) Chalk, Odiham, North Hants 



(No. 12), about half a mile north of where {g) was obtained, by Prof. Way. 



The seven following analyses of white clays from the Tertiary- 

 beds of Devon and Dorset are given for comparison with the in- 

 soluble constituents of the chalks and chalk-marls which would be 

 left after the removal of the carbonate of lime and other more or 

 ess soluble matter by watery dissolution. 



Soluble in hydrochloric acid : — i. 



Moisture and water of combination 9*09 



Oxide of iron 0*50 



Alumina 18*05 



Lime 0-18 



Magnesia 0-14 27-96 



. Insoluble in hydrochloric acid : — 



Alumina 18-87 



Lime 025 



Magnesia 0"18 



Silica 51-88 



Alkalies and loss 0-86 72-04 



100-00 



i. Analysis of White Pipe-clay from Newton Abbot, Bovey Tracey Lignite- 

 deposit, by Dr. Voelcker. 



For the following analyses I am indebted to Mr. Charles D. Blake, 

 of Newton Abbot : — 



i. k. I. m. 



Silica 67-5 47-0 60-0 63-0 



Alumina 29-0 48-0 34-0 32-0 



Oxide of iron ... 1-0 15 2-5 3-0 



Magnesia 1-5 2-0 — I'O 



Potash _ _ 2-0 — 



Water and waste I'O 1-5 1-5 1-0 



100-0 1000 100-0 1000 



j. Analysis of " China Ball Clay," Bovey Tracey Lignite-deposit, from the 

 clay-works of Messrs. Watts, Blake, Bearne & Co. of Newton Abbot. 



^ Sand and siliceous matter. 



