H.—34

1939. NEW ZEALAND.

DEPARTMENT OF SCIENTIFIC AND INDUSTRIAL RESEARCH (THIRTEENTH ANNUAL REPORT OF THE).

Presented to both Houses of the General Assembly by Leave.

CONTENTS.

PAGE | Minister's Statement .. .. . • ■ • I Secretary's Report .. .. • ■ • • 4 General .. .. • ■ ■ • • ■ ,r> Dairy Research Institute .. .. .. 7 Plant Researoh Bureau ... • ■ • ■ 7 Plant Chemistry Laboratory .. .. .. 9 Animal Research .. .. • • ■ • 9 Soil and Land-utilization Surveys .. .. 10 Soil Erosion.. .. •• •• ..10 Mineral Content of Pastures (Cobalt Investigations) 10 Wheat Researoh Institute .. .. • • 10 Fruit Research .. • • • ■ 11 Tobacco Research .. .. • • • • H Phormium Research .. .. .. • ■ 12 Timber Protection Research .. .. .. 12 Leather and Shoe Research Association. . .. 13 Wool Manufacturers' Research Association .. 13 Radio Research .. .. • ■ ■ ■ 13 Social Science Research Bureau .. .. 14 Dominion Laboratory .. .. ■ • 14 Meteorological Branch .. .. • • 14 Geological Survey .. .. ■ • • • l 0 Observatories .. .. • • .. 15 New Zealand Standards Institute .. .. 16 Overseas Contacts .. .. . • ■ • 16 Reports of Research Committees of the Council of Scientific and Industrial Research — Dairy Research Institute .. .. . • 17 Plant Research Bureau . . .. 23 Plant Chemistry Laboratory .. .. 40 Animal Research Management Committee . . 41

PAGE Reports of Research Committees of the Council of Scientific and Industrial Research —continued— Soil Survey .. .. .. .. . . 40 Soil Erosion.. .. .. . • 60 Mineral Content of Pastures .. .. 60 Wheat Research Institute .. .. 64 Fruit Research .. .. . 66 Fruit Cold Storage Research .. .. 73 Tobacco Research .. .. .. •. 75 Phormium Research .. .. . . SO Timber Protection Research Committee .. 82 Leather and Shoe Research Association.. .. 83 Wool Manufacturers' Research Association .. 85 Radio Research . . .. .. 86 Social Science Research Bureau . . .. 87 Dominion Laboratory .. .. . . 89 Meteorological Branch .. .. . . 96 Geological Survey Branch . . .. 103 Dominion Observatory .. .. . • ..117 Apia Observatory .. .. . . . . 123 Magnetic Observatory .. .. . . 125 Miscellaneous Investigations— Pumice in Concrete and Special Cements .. 127 Strength of Fibrous Boards . . . . 127 Magnetic Surveys in North Auckland . . . . 128 Magnetic Work in Central North Island .. 128 Radioactivity Investigations .. .. 129 Research Scholarship .. . . . . . . 1 29 Imperial Agricultural Bureaux .. .. ..129 Publications .. .. .. ■ • . . 130 Staff .. .. .. •• ..131

I—H. 34.