419 
the Island Puai, and that in its uniformly warm temperature they 
all recovered in a very short time. I regret to say that my stay 
upon the island was too short, and I was too much engaged in 
other observations, to find time for making comparative thermo- 
metrical observations . 1 
Before leaving lake Rotomahana, the warm lake, however, I 
must also make mention of the Rotomakariri, or the cold lake, 
situated East of the Rotomahana at the foot the Tarawera moun- 
View of the Rotomakariri (cold lake) with the Tarawera mountain. 
tain. It is smaller than the Rotomahana and shows very remark- 
able circular coves reminding mo of the circular tuff-crater basins 
in the vicinity of Auckland. However, having seen the lake only 
from the heights above the Rotomahana, I am not able to say, 
how that phenomenon is to be explained. East of the Rotomakariri, 
there is another little water-basin, surrounded by swamps, and the 
joint outlet of both is the Awaporohoe, which unites with the Kai- 
waka river between tbe Rotomahana and Tarawera. A third, much 
larger lake, about three miles long and one mile wide, by the 
natives called Rerc-whaka-Aitu , is said to lie in the Kaingaroa 
plain about tive miles East of Rotomahana; a lake, of which as 
1 The only observations contained in my journal concerning the atmospheric 
temperature upon Puai, measured in the shade in front of my hut, are as follows: 
April 28. 5'/ 2 p. m. 54° F. April 29. 8 a. m. 50° F. 
6 p. m. 53° F. 5'/ 2 p. m. 52° F. 
8 p. m. 53° F. 8 p. m. 51° F. 
9 p. m. 53° F. April 50. 7 l / 2 a. m. 50° F. 
On the 29. and 30. April a heavy, rough Southwest wind was blowing. 
