Calcite in Guernsey. 



77 



But we have direct evidence that the drinking water is 

 sufficiently charged with lime in this island. A long expe- 

 perience in Water Analysis proves that the average quantity is 

 not less than seven grains of Lime per gallon of water, while 

 from twelve to fifteen grains is by means unusual. Average 

 spring water as supplied to English towns will not contain 

 more. 



We see therefore that the absence of Limestone, is not of 

 necessity a proof of the absence of Lime. 



Agriculturally speaking, more free lime in the soil would 

 be an advantage, but this is a small matter, as a farmer who 

 knows his business will be able to charge his soil when he 

 requires it, by the mere addition of suitable forms of manure. 



Note on the probable existence of an old beach forty feet below the 



present level of the Truchot. 

 By Mr. A. Collenette, F.c.s, at the meeting of the Society held 

 13th February, 1883. 

 During recent repairs and alterations of a well at the 

 Truchot (Mr. W. H. Smithard's late Foundry), evidence of the 

 existence of a former beach or the inland extension of the pre- 

 sent one has come to light. 



The following is a description of the Strata : — 

 (Totals) 8 feet of hard gravel. 



12 4 feet of black earth mixed with gravel. 



15 3 feet of yellow clay. 



27 12 feet of hard brown gravel. 

 29 2 feet of black peaty mould. 



33 4 feet of loose yellow gravel. 



40 7 feet of rolled stony and gravelly beach-like 



deposit. 



This seems to point to important landslips from the Cotils 

 towards the Truchot, and if investigated may lead to interest- 

 ing discoveries. 



