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of laumontite crystals. There is no trace of other zeolites, but 

 the cavities are sometimes tilled by large calcite individuals. It 

 is not as yet known whether this development of laumontite is 

 connected in some way with the presence of the hot spring, 

 in which case it might be of comparatively recent origin, or 

 whether the fact that it occurs near the spring is accidental. 

 The only fact recorded about the water is that it contains 

 sulphuretted hydrogen and that the temperature is 38° C. ; we 

 know nothing with regard to the occurrence of any mineral 

 deposits. 



The laumontite crystals which, in a few of the cavities, 

 are rather well-developed, may attain a length of I cm. and are 

 of the ordinary form. They are usually bordered by ?w(llO} 

 and c{00l}; more rarely by quite small faces of a{lOO} and 

 e{20l}. A few twins about a (lOO) occur. The crystals are 

 incoherent as is usually the case and crumbling; their colour 

 is a reddish-white. 



