_ 
Xxvl. ABSTRACT OF PRCCEEDINGS. 
3. From the Australian Museum—(a) Ruby-margarite 
rock, from Rimu, Hokatika, New Zealand; (b) specimens 
of analcite, prehnite, and natrolite occurring in cavities in 
volcanic breccia associated with basalt at Ardglen. 
4. By Professor Cotton—Specimens of (a) the rock rod- 
ingite from near Nelson, New Zealand; and (b) the Maitai 
slates, New Zealand. 
5. By Mr. Browne—(a) Hornblende lamprophyre from a 
dyke intersecting the granite near Pretty Point, Kosciusko 
Plateau; (b) a series of specimens from Cooma illustrating 
what is believed to be a gradation from slate through 
phyllite to mica-schist. 
6. By Professor David—(a) Specimens of Upper Devonian 
rocks from Victoria; (b) Ice-scratched boulders from the 
Kosciusko region and from Gormanstown (Tasmania), of 
Pleistocene age; (c) contemporaneously-contorted varve- 
rock of Pleistocene age, from near Mount Lyell, Tasmania. 
The Chairman gave an address, illustrated by lantern 
slides, on the geological features of certain parts of Tas- 
mania, with special reference to the evidence of the Pleis- 
tocene glaciation. 
Monthly Meeting, 24th April, 1922. 
Professor Sir Hdgeworth David in the Chair. 
Sixteen members and one visitor were present. 
& 
EXHIBITS: 
1. By Mr. Osborne—(a) Silicified rock from Kiama; (6) 
Jasper from Nundle district; (c) Pyroxenite from Nundle 
district. 
2. By Dr. Cotton—Sample of petroleum and country 
rock from Murchison district, New Zealand. 
3. By Mr. Poole—Photographs of the Sounds about Picton 
and Nelson, New Zealand; also of river gravels near 
Blenheim. 

