496 Scientific Proceedings, Royal Dublin Society. 
A.D. 1890, January 27. Bog at Loughatorick North, Co. Galway. 
—The bogis situated in the townland of Loughatorick North, on the 
Slieve Aughty Mountains, nearly on the watershed, and 300 feet 
above Ballinlough Lake, which lies N.H., and into which the bog 
drains by asmall river. ‘The bog consists of two portions, separated 
by a narrow neck, where exposed rock was seen after the outburst. 
The upper and larger part is 70 acres in extent, the lower only 
15 acres. The latter began to move 3 days before the upper portion: 
in its centre was a small lake to which an underground stream could 
be traced ; after the outburst, this lake became dry. Aftera fall of 
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snow, a sudden thaw set in on the 24th January; three days later — 
a movement of the bog commenced, and continued till Ist February. 
Great masses of peat were carried away by the black flood into the 
Ballinlough Lake, which was nearly filled with peat and the out- 
washed trunks of trees. The lowlands were covered with peat 
over an area of 100 acres, and for a depth of 12 inches. ‘Traces of 
the flood were visible to a height of 6 or 7 feet on the trunks of 
trees which stood in its course. The upper part of the bog sub- 
sided from 10 to 15 feet; its margins were much rent with fissures." 
1895, August 9.  Dungiven Bog, Co. Derry.—The site was 
in the townland of Briskey, at the east slope of Benbradagh, 
an extensive mountain bog 10 to 380 feet in depth, sloping at a 
gradient of about 1 in 12. Where the burst occurred a small 
stream runs underground for about a quarter mile, the ground 
above it being firm, so that cattle grazed on it. On the evening — 
of August 9th there was a thunderstorm, but not accompanied by 
any excessive rainfall. The weather during the summer had been 
normal. In the night, probably before midnight, between 2 and3 | 
acres of bog gave way. For some 40 yards length at its lower end, 
the bog burst out entirely. Over the rest a tapering area 300 feet 
wide by 600 long, the ground subsided about 10 feet, leaving — 
great blocks of the solid crust, broken up in a fantastic way. A 
very considerable flood of water and peat poured down the stream, — 
which eventually joins the River Roe. No damage was done, as — 
the gradients are steep, and the land not under cultivation, but a 
1 Report to the Board of Public Works, by Mr. A. T. Pentland, 24th November, 
1890. 
