104 Transactions. 
as the Puzzuolanos of Italy, but it is possible that, on analysis, it may be 
shown to possess a somewhat similar composition. 
The limestone of Whangarei is believed by many to be eminently 
hydraulic. It is of great importance that such should be ascertained by 
careful and complete analysis of fair samples of the stone. The importance 
of the subject to hydraulic engineering and to the colony at large cannot be 
overrated. Should the above remarks prove of interest or use to any one, 
the writer will feel amply repaid for the trouble of collecting them ; he only 
regrets that they are so crude and incomplete. 
Ant. XIL— Notes on the Birds of the Great Barrier Island. 
By Captain F. W. Hurron, F.GS. 
[Read before the Auckland Institute, 6th July, 1868.] 
Havine spent two months this summer in exploring the Great Barrier 
Island, I am enabled to lay before the Society what I consider to be a 
tolerably complete list of the birds found there. 
I have given the English names of those birds that I know to possess 
one, but many, of course, are known by their scientific names only. The 
native names were obtained from Maoris on the island. 
Hieracidea nove-zealandie. | Sparrow-hawk. 
Circus gouldi. Hawk. Co : 
thene nove-zealandie. Morepork. Heruru. Koukou. 
aleyon vagans. i s 
Prosthemadera nove-zealandie. Tui. Very abundant. 
Pogonornis cincta. Thi. Not uncommon. 
Anthornis melanura. Bell-bird. Korimoko. Abundant. 
Acanthisitta chloris. irumiru. At Harataonga. 
- Mohoua albicilla. Popokotea. Very common. 
Spheneacus, sp. Matata. Kaitoke Swamp. 
. Gerygone flaviventris. Common. 
2. Certhiparus nove-zealandie. Riro-riro. Seen by Mr. Kirk on Arid 
. Island. 
Zosterops dorsalis. White Eye. I did not sce this bird, but Mr. 
Allom informed me that it had been on the island for the last 
[n 
PO WIA MB oo bop 
* 
n 
m 
jd 
+ 
i our years. 
* 14. Petroica longipes. Totowai. Robin. Common. 
* 15. » ' jf. iromiro. 
16. Anthus nove-zealandie. Pihoihoi. Lark. Common. 
1 @as okako. New Zealand C 
my eadion carunculatus.t Tieke. Saddle-back. Not uncommon. 
. Cr 
* 20. Platycercus pacificus. Kakariki. Parrakeet. 
s x. k auriceps. Parrakeet. Common. 
* 22. Nestor meridionalis. Kaka. Not common. 
