Marr.—ZInjfluence of Atmospheric Changes on Geysers in Rotorua District. 97 
slighest approach of sickness, they would resign themselves to death, and 
that would be the invariable result. This may be accounted for simply by 
a dream, and the effect of an excited imagination upon a weak, untutored 
mind. 
I do not apologize for the fragmentary nature of the notes which I have 
thus put together, but I may express a hope that some of those who have 
had opportunities of inquiry into the same subject, will, as early as 
possible, place on record the results of their observations. 
Appended to this paper are drawings of the private marks on Karaka 
trees, and the Mori-ori and Maori names of some of the indigenous birds 
and plants. 
Arr. IH. — Notes on the Influence of Atmospheric. Changes on the Hot Springs 
and Geysers in the Rotorua District. By Capt. Gmsrrr Mar. 
[Read before the Wellington Philosophical Society, 28th Oct., 1876.] 
For many years past, partly from my own observations, and partly from 
conversations held with intelligent natives, I have been led to believe that 
some of the hot springs and geysers in the Rotorua and Taupo districts 
are affected to a remarkable degree by changes in the wind. Latterly I 
have carefully noted down these changes, and hope at a future time to 
reduce such observations to some system. But in the hope of drawing 
attention to this very remarkable phenomenon, I will now give a few 
instances as they occur to my mind. 
Close to my residence at Tekautu, Ohinemutu, there is a large steaming 
pool 80 by 50 feet wide, and about 60 feet deep, named Tapui. It is 
situated on a grassy mound, about a hundred yards from Rotorua Lake, 
and some fifteen or twenty feet above its ordinary level. I have been in 
the habit of bathing here for some years past, and generally found the- 
water about blood heat. 
Since October, 1874, I have observed that ihitai the north and 
east winds (which blow directly across the lake) set in, Tapui fills up four 
or five feet, a strong outflow takes place, and the temperature rises from 
100° to 190° This continues till the wind shifts round to south, south-west, 
or west, when Tapui resumes its ordinary level and temperature. 
In 1875, from January to September, sea breezes or winds from north 
to east, set in, generally about 9.80, and at noon Tapui would be full and 
running over, and nearly at boiling point. In the evening, as the wind 
from the sea died away about six o’clock, the water began to recede, the 
