395 
The data regarding the rocks passed through in the boring, as given in 
“ Report re Boring for Artesian Water in the Mallee,” by R. L. Jack, J. 
Stirling, and E. Checchi, (1897), are as follows :— 
Middle Tertiary limestone 1 , 200-460 feet. 
Sandstones, clays, and lignites of Middle Tertiary age 2 , 460-1,080 feet. 
Bedrock struck at 1,172 feet. 
A sample of rock from 332-380 feet (Nhill Water Trust bore), which 
I examined, is seen to be polyzoal rock (Janjukian), with :— 
Cellepora sp. 
Lovenia forbesi, T. Woods sp. 
Mopsea tenisoni, Chapm. 
Ditrupa cornea, L. var. wormbetiensis , McCoy; (abundant). 
Netherby, No. 53. 
The depth of this boring is 2,200 feet. 
The reduced level of the surface of the ground above sea-level is 390 feet. 
The reduced level of the bottom of the bore is -1,810 feet. Fresh water was 
struck at 135 feet from the surface. 
The official record states 3 that “ Middle Tertiary limestone extended 
from 245 to 657 feet. Clays and lignites of Middle Tertiary age 4 from 657 to 
978 feet. Sandstones, shales, and conglomerates (? Upper Palaeozoic) from 
978 to 2,175 feet. ‘ Porphyry ’ was cut between 2,175 and 2,200 feet.” 
A sample of the fossiliferous limestone from the above boring from 
410 ft. 1 in. is in the Museum collection. An examination of the fossils show 
the following to occur at that depth :— 
Polyzoa, indet. 
Terebratulina suessi, Hutton sp. 
Nucula atkinsoni, Johnston. 
Trigonia semiundulata, Jenkins. 
(?) Cucullcea corioensis, McCoy. 
Limea transenna, Tate. 
Cuspidaria subrostrata, Tate sp. 
Myodora australis, Tate. 
Venus ( Chione ) cainozoicus, T. Woods sp. 
The above list does not show any especially restricted fossils, for all of 
them have a rather extensive vertical range, being characteristic of the 
Barwonian series ( i.e ., Balcombian + Janjukian). At the same time one notices 
that the species are more typically Janjukian than Balcombian, and, consider¬ 
ing the evidence of the faunas of the bores in the proximity, this points to 
the conclusion that they belong to the Janjukian. 
Walpeup, No. 21. 
Reduced level of surface of ground above sea-level, 213 feet. Depth of 
bore, 852 feet. Reduced level of the bottom of bore - 639 feet. 
Upon a sample of this bore at 802 feet being submitted to me by Mr. A. 
S. Kenyon, I reported as follows (13th May, 1910) :— 
“ The sample of the Walpeup bore at 802 feet shows that the glauconitic 
sandy bed has been struck, which, in the Kow Plains series, was met with at 
about 200 feet. This present evidence points to a considerable thickening 
of the Tertiary series going northward, corresponding with the theory of a 
1 Probably Janjukian. 
2 Probably equivalent to the dark, carbonaceous clays with quartz grit of the Aire coast. 
8 Report re Boring, etc., Jack, Stirling and Checchi, 1897, p. 3. 
4 Probably the same as the Aire Coast phase of Janjukian age. 
