PHM GHOLOGIST. 
EDITED BY 
HENRY WOODWARD, LL.D., 
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GEOLOGICAL MAGAZINE 
| Monthly Journal af Oe Kaauyseian Insti 
WITH WHICH IS INCORPORATED 
FiR-S FiG.S:, 
: ASSISTED BY x 
PROFESSOR J. W. GREGORY, D.Sc., E.R.S., F.G.8. 
DR. GEORGH J. HINDH, F.RB.S., F.G.S. 
Sik THOMAS H. HOLLAND, K.C,1E., A.R.C.S., D.Sc., F.R.S., F.G.S. 
Dr. JOHN HDWARD MARR, M.A., Sc.D. 
(Camp.), F.R.S., E.G.S. 
Dr. J. J. H. TEALL, M.A., Sc.D. (Came.), LL.D., F.B.S., F.G.S. 
PROFESSOR W. W. WATTS, Sc.D., M.Sc., F.R.S., Vick-PRES. Gnon. Soc. 
‘Dr. ARTHUR SMITH WOODWARD, F.B.S., F.L:S., Prus. Grou. Soc. 
JUNE, 
1916. 
Ce IN ob Oru IS SSS © 
I. ORIGINAL ARTICLES. Page 
New or Imperfectly Known Chalk 
Polyzoa. By R. M. BRYDONE, 
_E.G.S. 
The Structure and Later Geological 
History of New Zealand. By 
SDI Oa oAc .COTTON, <E.G:S: 
Bh (With a Map of Localities. iru. we 48 
a The Crystalline Rocks of the 
| _‘~Piémontese Alps. By C. S. Du 
5 “RIGHE PRELLER, M.A., Ph.D., 
MEE. F.G.S. (With 3 
' Text-figures.) (Concluded.) ... 250 
- The Origin of Topaz and Cassiterite ~ 
in Malaya. By Dr. W. R. JONES, 
| E.G.S. s . 255 
“gN Gigantic “Cephalopod “Mandible. 
fe by Go. CRICK, H:G.S:; F.2:8. 
- {With 2. Text- figures. yes Were 260 
“Radio: -activity and Earth’s Thermal 
History. By ARTHUR HOLMES, 
AROS... F.G:S. ome a 
Diagram Figure.) are =. 265 
He II. REVIEWS. 
Geology of South Wales Coalfield: 
_ The Country around Milford - ... 274 
Mesozoic and Cenozoic Echino- 
derms of United States. By 
_W.B. Clark and M. W. Twitchell 277 
Gs. net, — 
(Plate X.)... 241. 
LONDON: DULAU & CO., Lr, 
REVIEWS (continued). Page 
Engineering Geology. By H. Ries 
and T. L. Watson... . 278 
Fauna of Batesville Sandstone ... 280 
Glacial Geology of North America 281 
Borings in Victorian Tertiaries ... 281 
Brief Notices : Yorkshire Science— 
American Carboniferous—Fossil 
Insects—South African Dinosaurs 
—The Fens—Paleontology in 
California—Parapavo—T woVul- 
tures — Pliohippus — American 
Bisons—Californian Pliocene— 
Miocene, Nevada... ... ... ... 282 
III. REPORTS AND PROCEEDINGS. 
Geological Society of London O84 
Geological Society of Glasgow... 285 
Liverpool Geological Society... ... 286 
. LY. CORRESPONDENCE. 
JOM - Sith eee < sag ah oo ec OBE. 
V. OBITUARY. 
Lieut. R. L. Valentine, Geological 
Survey of Ireland ...... ... 287 
VI. MISCELLANEOUS. 
Notes on Queensland ... ... ... 288 
87 SOHO SQUARE, W. 
he Volume for 1915 of the GEOLOGICAL MAGAZINE is ready, 
Cloth Cases for Binding may be had, price 1s. 6d. net. 
