EXPLANATION OE THE MAPS. 
Ammonites Novo-Seelandicus (v. Hauer), 
* 
Inoceramus Haasti (Hochst.). 
2. Strata containing coal on the West Coast, south of the 
entrance of the Waikato—sandstone, marl, and slate clay, 
with thin, worthless seams of coal, and numerous portions of 
plants, amongst which are frequently to be found in good 
preservation: 
Polypodium Hochstetteri (Unger), 
Asplenium pala?opteris (Unger) ; 
while the Belemnites (belonging to the group of Canaliculati) 
indicate the Jurassic system. The largely folded Inoceramus 
and Ai nm °nites have a greater similarity to those from the 
chalk formation. 
gain ozoic (teetiaey) eoemation. 
Tertiary Formations are distributed over a large portion of 
the Province of Auckland, for the most part in a horizontal 
position. 
1. Brown Coal Formation : sandstone and clay slate , with beds 
of useful coah 
(a.) The Hunua coal-field, near Drury and Papakura 
district, south of Auckland, discovered in the year 1858 
by the Rev. Mr. Purchas, and worked since 1859 by 
the Waihoihoi Coal Company. The coal belongs to a 
class of brown coal—to the so-called glanz and pitch 
coal—and contains a fossil gum—Ambrit (Haidinger)— 
which has often been mistaken for kauri gum. The 
price of this coal in Auckland is 80s. to 32s. per ton. 
The argillaceous slate and sandstone accompanying 
this contains several bivalves and leaves of Dicotyle- 
dones : 
'Fagus Ninnisiana (Unger), 
Lorantophyllum Griselinia (Unger), 
,, Dubium (Unger) 
Myrtifoliuin lingua (Unger) &c. 
(/?.) The coal-fields of the Lower Waikato basin—a large 
brown coal basin—is situated at Kupakupa, on the 
northern declivity of Hakarimata chain, but is not yet 
worked* 
