centre 186 125. A snow crystal covered with granular deposit of frost 186 126. Local-storm type 190 127. Cold high altitude 190 128. Germ or birth of ice crystal 197 129. Second stage in which crimps begin to appear 197 130. Third stage of development 197 131. Fourth stage flower-like shape beginning to show 201 132. Ice flower completed 201 133. Flower-like shape fully formed 201 134. Ice flower beginning to show shadings 201 135. Ice crystals growing downward into the brook 205 136. Group of ice crystals 205 137. Lance-like form seen pushing out from banks of brooks 205 138. Second stage of lance-like ice crystals 206 139. Lance-like form completed 206 140_a_. Freak ice crystals 206 140_b_. Group of ice crystals containing germs 206 141_a_. Coral-like branch showing the “feather type” in detail 210 141_b_. Window-pane ice 210 142. Beautiful type of window-ice growing like delicate seaweed 214 143. Window-pane ice 214 144. Another type of window-pane ice 214 145. An example of columnar ice 218 146. Columnar ice 218 147. Columnar ice, section shown in detail 218 148. Very great thunder-storm drops 222 149. Rain from cirro-stratus high clouds 222 150. Rain from low nimbus clouds 222 151. Thunder- and hail-storm type 226 152. From a great rain storm which lasted 15 hours 226 153. Thunder cloud 230 154. Nimbus or low stratus clouds 230 WHEN THE DEW FALLS [Illustration: 3. Grass blade with dew deposit—three drops held in suspension on top of blade] [Illustration: 4. Showing how sharp pointed grasses collect and retain the dew drops, while blunt or broken blades collect none] [Illustration: 5. Grass-blade holding two drops—dew drop preparing to fall] [Illustration: 6. Dew drops on grass blade; showing inverted landscape held in drop] CHAPTER I WHEN THE DEW FALLS