154 SCIENCE Itf SHORT CHAPTERS. 



WEATHER-CHART, OCTOBER 5, 1875. 



EXPLANATION OP WEATHER CHART. 



In these charts the state of the sea whether "rough," "smooth," "mode- 

 rate," "slight," etc., is marked in capital letters; and the state of the weather 

 as "clear." "dull," "cloudy," "showery," etc.. in small letters. The direc- 

 tion of the wind is indicated by the arrows. Unlike the arrows of a vane, these 

 do not point towards the direction from which the wind is coming, but are fly- 



