Sxxy.—On the Mineral Waters of New Zealand. 448 
No. (7).—From the alum caves at Orakeikorako, collected 1st May, 1878. 
Differs from any of the preceding waters in containing a large quantity of 
sulphate of lime. It gives evidence of possessing only traces of iodine. 
No. (8).—From the Crow’s Nest, collected 1st May, 1873. Temperature 
of spring 179? Fahr., similar to No. (4). Quantity of iodine present is very 
minute, but still can be detected in it as unconcentrated. 
No. (9).—From Waipahahi. Forms a pool 50 by 80 yards, the native 
name of which is Konekeneke. It has a rocky bottom and forms a fine 
swimming bath. Temperature of water varies from 98° to 120°; collected 
1st May, 1873. This is a siliceous water, from which iodine appears to be 
absent; at least this element could not be detected in it when concentrated 
to one-fifth of its original bulk. 
No. (10).—From a hot spring on the Oranui block—Te Hukahuka. 
fons a bathing place 15 by 10 feet. A cold water creek and hot springs 
issue from its enclosing rocks at side and bottom. This resembles the spring 
water of a slate country except that it is largely charged with iodine; col- 
lected 1st May, 1873. 
From the above tables and schedule it will be seen that we have several 
kinds of mineral waters here, both hot and cold, within no great distance of 
each other, which is a circumstance likely to be of considerable advantage 
to many who may desire to use mineral waters for their health. 
It is to be observed that while there is this difference in the constitution 
of their saline constituents they nearly all contain iodine in sufficient 
amount to impart to them very decided therapeutic properties. This sub- 
stance, it may be stated, has been proved to be very efficacious when exter- 
nally applied in cases of cutaneous eruptions. 
I should state that so far back as July, in 1871, I partially analyzed a 
water (contributed by Mr. Murray Gibbs) from Haweraroa, Tarawera 
district, but whether taken from the same spring as No. (11) was, or from a 
hot spring at all, I have no information. However, it is essentially an 
acidic water like No. (11). As received it was opalescent, of a weak reddish- 
blue colour, and had an odour of sulphuretted hydrogen. . This opalescence 
is due to the presence of hydrated silica, which in a minutely divided or 
gelatinous form is transfused throughout the liquid. 
The free acid present is principally or wholly the hydrochloric. 
11a. Hepatic Mineral Water. 
A water collected by Dr. Hector, from Burton’s Taipo, is strongly 
hepatic. Besides the sulphuretted hydrogen which gives it this quality, it 
contains the other characteristic substances—arsenie and iodine—both | 
however, in small quantity. It is slightly acid, but acquires a strong 
and persistent alkaline reaction when evaporated to a small bulk. 
