CHAPTER XII

. INSTRUMENTS USED FOR MEASURING THE RAINFALL.

110. HOWARD'S RAIN-GAUGE.

111. GLAISHER'S RAIN-GAUGE.

112. RAIN-GAUGE WITH FLOAT.

113. RAIN-GAUGE WITH SIDE TUBE.

114. FITZROY'S RAIN-GAUGE.

115. SELF-REGISTERING RAIN-GAUGE.

116. The principle of Measurement.

117. Position for Rain-gauge, &c.

118. Cause of Rain.

119. Laws of Rainfall.

120. Utility of Statistics of Rainfall.

121. NEW FORM OF RAIN-GAUGE.

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