H.—34

1941. NE W ZEA L A N I).

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

Presented to both Houses of the General Assembly by Leave.

CONTENTS.

PAGE Minister's Statement . . .. .. .. 2 Secretary's Report .. . . . . 3 Reports of Research Committees of the Council of Scientific and Industrial Research— Dairy Research Institute .. . . . . 6 Plant Research Bureau .. .. 12 Plant Chemistry Laboratory . . . . 27 Animal Research .. . . . . 28 Soil Survey .. .. . . .. 29 Soil Erosion . . . . . . 36 Serpentine-Glauconite Committee . . .. 36 Mineral Content of Pastures .. . . 37 Wheat Research Institute . . . . 40 Fruit Research .. . . . . 42 Fruit Cold Storage Research .. .. .. 46 Tobacco Research . . .. . . 48 Timber Protection Research . . .. 51 Radio Research .. .. .. 53

PAGE Reports of Research Committees of the Council of Scientific and Industrial Research —continued. Leather and Shoe Research Associations .. 53 Wool Manufacturers' Research Association .. 55 Research Work at Agricultural Colleges .. 55 Miscellaneous Investigations— Casein and Bentonite .. . . 64 Industrial Microbiological Survey .. 65 Mineral Resources Committee .. .. 65 Physical Testing Laboratory .. .. .. 66 Dominion Laboratory . . .. .. 68 Geological Survey Branch .. . . 74 Dominion Observatory . . .. .. 85 Magnetic Observatory .. .. .. 90 Meteorological Branch .. .. . . 91 Research Scholarships .. .. . . 91 Imperial Agricultural Bureaux .. .. 92 Publications .. .. .. .. 92

I—IT. 34.