135 
only be slightly increased if four times the quantity of coal were being 
hauled. The cost of winning the coal under such conditions is unneces¬ 
sarily great; and, again!, the high price restricts demand. A more vigorous 
method of mining would give larger profits to the shareholder, better 
wages to the miner, and still supply the coal at a less price to the consumer. 
If more extensively bored and larger areas of coal found with seams, even 
3 feet thick, there should be room for expansion of the industry on the basis 
of a lower selling price. It appears highly probable that the coal seams 
may be far more extensive than so far proved. Much of the country-rock 
is inclined at considerable angles, but this in itself is no great drawback, so 
long as the rocks have not been too much broken up. 
It would add to the value of the industry if the by-products were 
utilized. In the older countries brick and tile works, pipe manufactories, 
and potteries are common adjuncts to coal mines. At Korumburra there 
are immense deposits of shale in the Jurassic beds, and the coal is gener¬ 
ally associated with shales. The shales, by grinding, would furnish 
valuable clays suitable for many purposes, such as making varieties of 
bricks, tiles, pipes, stoneware, &c., and, perhaps, also fireclay and other 
fire-resisting material. Some of these clays vitrify at a low temperature, 
while others appear to be most refractory. Samples have been secured, 
and sent to the Laboratory for briquette tests, and also for complete 
analysis. 
The Jurassic rocks are remarkable for the exceedingly fertile soil they 
furnish when weathered down, and the analysis of the shales should fur¬ 
nish some hints as to the source of this fertility. 
At present bricks are brought from Melbourne, heavy freight-charges 
being added to the original price, while at Korumburra there is superior 
material on the spot for making bricks and cheaper fuel for burning them in 
the form of slack. Brickworks at Korumburra could supply a wide radius 
with all the bricks required, and at a moderate price. Later on pipes, 
tiles, &c., could also be made. 
The results obtained at the Laboratory in testing the Korumburra Juras¬ 
sic shales for brick-making were very favorable, and showed that an 
excellent brick could be produced at a low temperature (1150), but that at 
higher temperatures (1400) it became vesicular. 
\Re-port sent in 16th January, igo6.~\ 
ON A TOOTH OF CERATODUS AND A DINOSAURIAN CLAW 
FROM THE LOWER JURASSIC OF VICTORIA, AUSTRALIA. 
(NO. 25 ON LOCALITY MAP.) 
By A. Smith Woodward, LL.D., F.R.S., of the British Museum. 
(Reprinted from the Annals and Magazine of Natural History , Ser. 7, Vol. XVIII., 
July, 1906.) 
(Plate XIV.) 
The Jurassic vertebrate fauna of the Australian region is still almost 
unknown, some Ganoid fishes* and, perhaps, a few small Dinosaurian 
bonesf being the only fossils representing it hitherto described. A tooth of 
Ceratodus and a Dinosaurian clatv discovered by Mr. W. H. Ferguson in 
* A. S. Woodward, “The Fossil Fishes of the Talbragar Beds,” Mem. Geol. Surv. N.S. W 7 ales, Palseont. 
No. 9 (1895); T. S. Hall, “ A New Genus and a New Species of Fish from the Mesozoic Rocks of Victoria,’" 
Proc. Roy. Soc. Viet, n.s., Vol. XII. (1900), Art. XVI. 
t H. G. Seeley, “On Agrosaurus Macgillivrayi (Seeley), a Saurischian Reptile from the N.E. Coast of 
Australia,” Quart. Journ. Geol. Soc., Vol. XLVII. (1891), pp. 164-165, with figs. 
