86 NOTES ON MINERAL SPRINGS ()¥ NORTH-WEST COAST. 



During a recent visit to the district of Circular Head 

 I had an opportunity of again visiting Deep Creek, in com- 

 pany with an old resident who knew the country well, and 

 without whotse help it would have been difficult to identify 

 the locality of the springs, the whole of the surrounding 

 flats being thickly covered with tea tree scriib. Approach- 

 ing the creek we noticed numerous small fissures, with 

 water bubbling up to the surface of the ground. The 

 mounds haa entirely disappeared, and the only explanation 

 that could be suggested was that the material had been 

 carted away and burnt for lime; but against this theory 

 was the fact that the ground was too swampy and inter- 

 sected by numerous fissures to be practicable for horse 

 traffic. From the edges of these fissures I obtained pieces 

 of the travertine, which are now submitted for inspection, 

 and from one of the springs a sample of the water, which 

 Mr. Ward, the Government Analyst, has kindly analysed, 

 with the following result : — 



Water from Mineral Sprin.cs, Deep Creek. 



Grains 

 per gallon. 

 Chlorine in Chlorides 10.9 



Total solid matter . 81.0 



The solids consist chiefly of Sodium Chloride (salt) with Car- 

 bojiates of Lime and Maojnesia, the latter earboHate in larger 

 proportion. 



A considerable deposit of iron was present, but there was 

 practically no iron in solution. 



A somewhat similar deposit of travertine has been re- 

 ported to the Society from Mowbray Swamp, and in the 

 intervening district there are numerous other localities 

 where the surface coiiditions indicate the probability of 

 the occurrence of mineral springs. 



