230 REPORT— 1882. 



Grains per Gallon 



Chlorine 1-6368 



Calcium carbonate 20' 1000 



rixed hard salts . . ' 67-7500 



Sulphuric acid (SO^) 53-0 880 total partly included in fixed^ 



hard salts . . 



Alkaline carbonates ........ 



Sodium or other metal (combined %Yith CI or SO,) not in- 

 cluded in fixed hard salts 



Silica, alumina, iron, kc. 



54-5632 



Total solids (by evaporation) .... 135-8000 



_ Microscopic Characters. — The microscopic examination shows only a little 

 mineral grit. No trace of animal or vegetable life. 



Eemarks. — The -water has improved a little since plugging, and justifies further 

 plugging, as originally suggested, to the level of the green sand. 



J. L. Notter, M.D., F.C.S. 

 Laboratory, Army Medical School, Assistant Professor of Military Hygiene 

 Eoyal Victoria Hospital, Netley. 

 April 23, 1880. 



ft. iu. 



9. Top sand 4 6 



Fine clay 15 



Boulder clay 15 



Loamy sand 6 



Fine warp clay 9 



Grey sand 10 



Boulder clay . 4 



Green sand 16 



Green sand with layers of blue bind . , .18 



Blue bind or marl 19 



Light green sand with blue bind . . . . 35 



White sandstone 5 



Blue bind 10 



Red marl ........ 2 



White sandstone 810 



Blue marl 6 



White sandstone 23 



Blue marl 3 



Variegated sandstone 60 



Red marl 3 



310 

 Note.— The actual depth is 311 ft. 4 in., but 1 ft. 4 in. has been lost in taking- 



the various dimensions. See remark opposite 3, as to plugging. 



lO. Yes ; the drift is full of water. 11. Yes. 12. No. The strata are those of 



the Vale of York. 13. None. 14. None. 15. None ; as far as we know. 



Collected by Mr. C. Fox Strangways. 

 From Mr. J. W. Woodall, J.P., F.G.S. 



1. Salton, near Malton, York, N. Riding. Xa. 1880. No. 2. 150 ft. 3. 316. 

 About 4 in. 3a. None. 4. Flows out at surface, ftff. Flows out at surface. 5. 

 Not been tested. 7. A few feet above the Rye ; 3 or 4 ft. 8. No analysis has been 

 made, but it is slightly sulphureous. 9. Fluviatile drift 15 ft. Kimmeridge clay, 

 about 295 ft. lO. No. 11. Yes. 



Appendix TV.— By Mr. E. Wethered, F.G.S., F.C.S. 

 The Porosikj and Density of Rocks. 

 My first object in commenciug a series of observations on the porosity 

 of rocks was with a view of investigating the lithological changes which 



