4*18 Tr. I 1 . llillebrand — Zinc-hearing Spring Waters. 



Summary. 



Hydrozoa, 



2 



species. 



Brachiopoda, 



27 species 



Actinozoa, 



10 



" 



Pelecypoda, 



6 



Annelida, 



2 



" 



Gastropoda, 



6 " 



Trilobita. 



6 



" 



Pteropoda, 



1 " 



Ostracoda, 



3 



" 



Cephalopoda, 



7 " 



Bryozoa, 



2 



u 



Total, 



72 



Nearly all the corals are confined to the lower beds, J 18, 

 L 19, and O 18 ; the first two are a conglomerate of coral 

 fragments with pebbles of quartz and hydromica schist, while 

 the latter is a limestone. The greatest number of species (24) 

 is found near the middle of the series (L 12) in a slightly indu- 

 rated shale. The fauna was evidently a rich one, and several 

 of the unidentified species are probably new to science. Many 

 of them show distinctive characters, but the majority are too 

 fragmentary and poorly preserved for accurate description or 

 determination. c. E. B. 



Art. LII. — Zinc-osaring Spring Waters from Missouri; 



by ~W. F. HlLLEBRAND. 



Zinc salts have been observed in the waters from La Malou 

 in the south of France, according to Doelter,* and in those of 

 certain hot springs of New Zealand,f perhaps also in those of 

 other localities, but I have as yet been unable to find any data 

 bearing upon their contents in such salts. Durand-Fardel's 

 Dictionnaire des Eaux Minerales, 1860, fails to include zinc as a 

 constituent of the waters of La Malou which had been anal- 

 yzed up to that time. It is therefore improbable that this 

 element is present there in any considerable quantity. 



The spring waters herein described are, it is thought, unique, 

 in that their chief salt constituent is zinc sulphate. The fol- 

 lowing information in regard to the location and surroundings 

 of the springs from which they flow has been obtained from 

 Mr. W. P. Jenney of the U. S. Geological Survey, who was 

 led to suspect a peculiarity of composition from the strong 

 metallic astringent taste left in the mouth after swallowing, 

 and by the slimy white precipitate which covers the walls of 

 the springs and all vegetable matter falling into the water 

 about them. 



On the road from Joplin to Seneca, in Newton County, 

 southwestern Missouri, about a quarter of a mile north of 



* Allgemeine cheaiische Mineralogie, p. 233. 



f Trans, and Proc. New Zeal. Institute, 1870, vol. iii. 



