THE NEW ZEALAND 
JOURNAL OF SCIENCE 
AND 
TECHNOLOGY 
CONTENTS. 
THE NEW ZEALAND INSTITUTE SCIENCE CONGRESS, CHRIST Page 
gjgTf CHURCH, 1919 225 
Inception of the Congress .. .. .. .. . .• 227 
Officers of the Congress 230 
Biographical Notice: Leonard Cockayne, Ph.D., F.R.S. ..231 
Programme of the Congress .. .. 234 
• Opening Ceremony .. . 238 
Address by His Excellency the Governor General .. .. 238 
Address by the Hon. G. W. Russell, Minister of Internal Affairs .. 239 
Presidential Address by Dr. L. Cockayne . 241 
Evening Lectures .. ' .. .. .. .. 253 
PAPERS, ABSTRACTS, AND TITLES . 256 
(The following papers appear in full.) 
D. PETRIE. The Need of a Comprehensive Dominion Herbarium .. 260 
J. A. THOMSON. Polymorphism in the Common New Zealand Limpet, 
Cellana radians . . . . . . . . .. . . 264 
D. MILLER. The Status of Entomology in the Economy of the Dominion 269 
L. COCKAYNE. On the Seedling Form of the CoraFshrub 274 
E. K. LOMAS. Geography : Some Educational Aspects of the Subject .. 282 
P. G. MORGAN. The Organization and Functions of a State Geological 
Survey .. .. .. .. .. .. .. .. 289 
H. F. SKEY. The North=west Winds of Canterbury 300 
C. C. FARR. The Porosity of Porcelain 302 
E. PARRY. Interference of Power Circuits with Telephone Circuits .. 308 
E. E. STARK. The Effect of Low Power=factor from the Standpoint of 
EIectric=power=station Operators .. 314 
C. E. ADAMS. Photographs of the Solar Corona 317 
J. C. ANDERSEN. The Natural Laws of Poetry 320 
W. G. MORRISON. Some Proposals with regard to Natural Afforestation 
in a New Zealand Mountain Area .. 339 
RESOLUTIONS PASSED BY THE CONGRESS .351 
NOTICES* 
SUBSCRIPTIONS.—The Journal will be issued six times a year. Subscription, payable 
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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. 
