THE NEW ZEALAND 
JOURNAL OF SCIENCE 
AND 
TECHNOLOGY. 
CONTENTS. 
EDITORIAL:— Page 
Training Research Workers .. .. .. .. .. .. 1 
ARTICLES:— 
C. CHILTON. Destructive Boring Crustacea in New Zealand .. .. 3 
R. HAEUSLER. Notes on the Acclimatization of Birds .. .. ' .. 16 
S. H. JENKINSON. Balancing of Locomotives .. .. ..19 
W. N. BENSON. A Review of Recent Researches on the Mesozoic Floras of 
Australasia .. .. .. .. .. .. .. 29 
P. 0. MORGAN. Permo=Carboniferous (Maitai) Rocks of the Eastern Part of 
the South Island of New Zealand .. .. .. .. .. 33 
E. BEST. A Maori Fish=trap showing Unusually Fine Workmanship .. 35 
ASTRONOMICAL NOTES:— 
The Combined Magnitude of Double or Multiple Stars. The Origin of New 
Stars. On the Character of the Spectral Lines due to a Sphere or Spherical 
Shell of Transparent Luminous Gas expanding uniformly .. 38 
DEPARTMENTAL REPORTS :— 
H. F. SKEY. Magnetic Observatory, Christchurch.—Seismological Records .. 41 
P. G. MORGAN and J. HENDERSON. Chrome=iron Ore, Mica, and 
Tungsten* ore in New Zealand .. .. .. .. ..43 
UNIVERSITY AND SCIENTIFIC NEWS:— 
New Zealand Institute Science Congress (Provisional Programme). Scientific 
and Industrial Research. Anthropology at the University of Otago. 
Lima huttoni H. Woods becomes Lima (Limatula) ivoodsi Sut. .. 51 
REVIEWS AND ABSTRACTS:— 
Conditions of Deposition on the Continental Shelf and Slope. An Atlas of 
the World’s Agriculture. The Latent Heat of Steam. Electric=power 
Supply in Great Britain .. .. .. .. .. ..59 
CORRESPONDENCE :— 
The Specific Gravity of Ice.—Moisture in Frozen Meat .. .. .. 64 
NOTICES. 
SUBSCRIPTIONS.—The Journal will be issued six times a year. Subscription, payable 
in advance and including postage, 6s. per annum ; single copy, Is. 6d. Subscriptions 
should be forwarded by money=order to the Director, Dominion Museum, Wellington. 
Subscribers are requested to furnish their full names and addresses. 
CORRESPONDENCE.— All communications relative to the Journal should be 
addressed to the Editor, Dominion Museum, Wellington. 
