VIU 



CONTENTS 



86. Table for determining apparent noon 



87.. Place 



Table of intensity at various angles 

 Reflected and Absorbed Light 



88. The fate of incident light 



89. Alethods of determination 



90. Leaf and epidermis prints 

 Expression of Results 



91. Light records .... 



92. Light sums, means and curves 



Temperature 



93 



Thermometers 



94. Air thermometers 



95. .Soil thermometers 



96. Maximum-minimum thermometers 



97. Radiation thermometers 



98. Thermographs . 

 Readings 



99. Time .... 



100. Place and height 

 Expression of Results 



1 01. Temperature records 



102. Temperature sums and means 



103. Temperature curves 



104. Plant temperatures 



Precipitation 



105. General relations 

 io(5. The rain gauge 

 107. Precipitation records 



Wind 



Soil 



108. 

 109. 

 no. 



Value of readings 

 The anemometer 

 Records 



111. Soil as a factor 



112. The value of soil surveys 



113. The origin of soils 



114. The structure of soils 



115. Mechanical analysis 



