THE NEW ZEALAND 
JOURNAL OF SCIENCE 
AND 
TECHNOLOGY. 
CONTENTS. 
EDITORIAL Page 
The Place of Science in Education .. .. .. . . .. 65 
ARTICLES :— 
W. E. COLLINGE. The Food of British Wild Birds .. .. .. 67 
L. COCKAYNE. The Importance of Plant Ecology with regard to Agriculture 70 
B. C. ASTON. Estimation of Potassium in Agricultural Samples by means 
of Perchloric Acid .. .. .. .. .. 74 
S. H. JENKINSON. Steel-casting Furnaces under New Zealand Conditions .. 77 
E. BEST. Shell-middens of the Wellington District •. .. 84 
E. PARRY. The Manufacture of Carbide of Calcium in New Zealand .. 91 
M. K. MESTAYER. The Occasional Occurrence of Australian and South Sea 
Island Molluscs in New Zealand ’ .. . p 1 .. 102 
ASTRONOMICAL NOTES . .. ic4 
DEPARTMENTAL REPORTS:— 
J. HENDERSON. Notes on the Geology of the Murchison District .. 108 
gg J. HENDERSON. The Geology of the Te Kuiti District, with Special Refer- 
HBf ence *° Coal Prospects .. .. .. .. .. .. 112 
REPORTS OF MEETINGS:— 
New Zealand Institute. Board of Science and Art. University of New Zealandf 116 
RECENT PAPERS ON SCIENTIFIC AND INDUSTRIAL RESEARCH^: 
Report on the Organization of Scientific and Industrial Research. Industrial 
Research in the United States of America. The Cattle-tick in Australia. 
Potash and Wool-fat in South Australia. Cream of Tartar Manufacture in 
South Australia. Marine Fibre. Report of the Advisory Committee on 
Brown Coal in Victoria .. .. .. .. .. .. 120 
NOTICES. 
SUBSCRIPTIONS.—The Journal will be issued six times a year. The subscription, 
which is payable in advance and includes postage, is 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. 
