E. F. PITTMAN AND T. W. E, DAVID. CXXXIII. 
3 ins. tod ft.9ins. Different results were obtained by 
observations taken during two short periods, viz. from 
November 6th to November 12th, 1894, and from May 30th 
to June 3rd, 1896. These are shown on diagram No. 2, 
Plate 24, which also represents the position which the 
bore occupies with regard to the well. 
In the first named period the successive ebbs and flows 
occurred at intervals of about 17$ hours, whereas in the 
latter the interval was about 10 hours. Minor oscillations 
may be noticed at the top of the curve obtained in the last 
named period, but the explanation is not clear, and it is 
possible that they may have been caused accidentally by 
some temporary defect in the tide recorder. Further 
investigation is needed before any reasonable explanation 
can be ofiered of this remarkable and interesting phenomenon 
viz., the rise and fall of the sub-artesian water. The chief 
obstacle to further investigation isthe inaccessible situation 
of the bore, and the absence of camping facilities at the 
spot. This occurrence at Urisino raises the question as to 
whether a similar phenomenon may not obtain at all the 
artesian bores, and this could perhaps be ascertained by 
attaching pressure gauges to their outlets, and observing 
whether the pressure varies from time to time. 
Occurrence of artesian water in rocks of Permo-Car- 
boniferous Age.—The only locality in New South Wales 
where artesian water has been proved to occur in strata 
of the above age is at Ballimore on the Talbragar River, 
20 miles north-east of Dubbo. A bore was put down to 
search for coal at this locality in 1886, and according to 
the report by Mr. W. H. J. Slee, F.G.s., at a depth of 540. 
feet the drill passed through a seam of coal 5 feet 2 inches 
thick, and while the boring was being continued to the 
second seam, which occurs 5 feet below the first, a supply 
of artesian water was struck, equal to 1,000 gallons per 
