442 



Transactions. — Chemistrij. 



to generate sulphuretted hydrogen from aqueous sokitions of the sul^Dhates 

 when in contact with them— a circumstance I note here especially for the 

 guidance of collectors of mineral waters for analysis. 





Salts 



Salts 















soluble iu 



soluble in 













No. 



water. 



PrJnci- 



pally 



alkaline 



chlorides. 



acids. 



Princi- 

 pally 

 sulphate 



of lime. 



Silica. 



Total 

 of Salts. 



Loss by 

 ignition. 



Physical character. 



Reaction. 



1 



5-28 



•74 



7-86 



13-88 



3-47 



pale yellow, clear 



faintly acid. 



2 



13-88 



4-31 



9-25 



27-44 



3-08 



colourless, clear 



,, 



3 



3-85 



1-69 



2-94 



8-48 



1-54 



!) )! 



,j 



4 



13807 



4-21 



10-03 



152-31 



3-09 



n 





5 



64-72 



1-63 



18-51 



84-86 



12-97 



yellow, turbid 



,, 



6 



8-13 



9-24 



15-75 



33-12 



1-52 



colourless, clear 



slightly acid. 



7- 



24-12 



3-84 



28-51 



56-47 



3-24 



>i 1) 



,j 



8 



127-62 



9-62 



6-25 



143-49 



4-61 



>) )) 



neutral. 



9 



G-16 



3-08 



12-33 



21-57 



4-65 



pale yellow 



slightly acid. 



10 



3 09 



4-62 



6-10 



13-81 



308 



colourless, turbid 



J, 



11 







2-22 



99-95 



, , 



„ clear 



very acid. 



12 







16-75 



200-73 





„ 



faintly acid. 



In the following schedule the localities of these waters are stated, together 

 with certain interesting particulars respecting them which have been fur- 

 nished by Dr. Spencer. The general character of each, as deduced fi.'om 

 the foregoing table, is also given :— 



No. (1). — Otumuheka Spring ; collected 1st March, 1873 ; a siliceous 

 water, more than half its solid matter being silica ; the remaining portion 

 is principally chloride of sodium with a notable quantity of iodides. 



No. (2). — From same locality ; collected same time as above, and is also 

 a siliceous water, but although it contains a larger proportion of alkaline 

 chlorides than this water, it gives but slight indications of iodine. 



No. (3). — From the Otumuheka Stream. This stream has a temperature 

 of 78° Fahr., and forms bathing places at Lake Taupo. It is a very similar 

 kind of water to No. (1), and, like it, is rich in iodine. 



No. (4). — From the Kuahine Hot Springs, on ground belonging to Mr. 

 Locke. These springs have a temperature as high as 190° Fahr. They 

 are eminently saline, the principal constituent being chloride of sodium, 

 and appear by comparative tests to be the richest in iodine of any of this 

 series of waters ; collected 1st May, 1873. 



No. (5). — From the baths of Orakeikorako. As received this was very 

 turbid and high coloured. It did not lose its turbidity when allowed to be 

 at rest for a long time. It is highly charged with saline matters, princi- 

 pally alkaline chlorides, and it gives a very distinct reaction of iodine. 

 The organic matter is high in this water. 



No. (6).— From a bath named after Mr. McMurray. Is a siliceous 

 water, comparatively poor in chlorides, but rich in iodides, 



