ABSTRACT OF PROCEEDINGS. xe 
2. Mr. PatneE—Devonian fossils from Quambaa, Rhyn- 
chonella cf. plewrodon, Leptodomus, Grammysia (?). 
3. Mr. W. R. BRownE—Granitic and other rocks from 
the Cooma district. 
4, Mr. J. H. CARNE—Diallage from Solferino. 
5. Mr. W.S. DuN—A new Paleesasterid from the Permo- 
Carboniferous beds of Gympie, Queensland. 
6. Professor T. W. E. DAvip—Glaciated boulders from 
Seaham. 
* Mr. L. F. HARPER read a note on the correlation of the 
coal seams occurring in the upper portion of the Upper 
Coal Measures as exhibited in the Southern, Liverpool, 
Sydney and Newcastle districts. 
THE IDENTITY OF THE SYDNEY HarBour CoLuizRies CoaL SEAM. 
This coal seam has always been definitely correlated with No. 1 
or the Bulli Seam of the Southern Coal Field. It is proposed in 
this note to bring forward certain points which in the writer’s 
opinion, justify some doubts as to the exact horizon of the Sydney 
Harbour Collieries Coal Seam. The evidence obtained from the 
various bores put down between the Southern and Northern coal 
fields may first be reviewcd: No. 1 Bore, Cremorne (Sydney 
Harbour) penetrated about 300 feet of Permo-Carboniferous strata, 
and it is interesting to compare this section with a similar thick- 
Approx. 
Number total 
Locality. of Coal | thickness Remarks. 
horizons.| of coal 
and bands. 
Newcastle District. ... 7 68 The two upper seams are being 
worked with a total thickness 
of 32 feet. 
Hawkesbury River ... 7 18 None of the seams are workable. 
Sydney ss Pee 5 19 Only the top seam is workable, 
| ‘| (from 5 to 10 feet) 
Illawarra District 6 40 Practically all the coal is won 
(Southern Coal Field)| from the top seam (from 4 ft. 
to 12 ft.) No.2 seam worked 
| to a small extent. 
