76 LABORATORY LESSONS IN GENERAL SCIENCE 



(e) Any apparent relation between wind direction, tem- 

 perature, and rainfall. 



(/) The relation of barometric fluctuations to weather 

 changes. 



(g) Any relation between wind direction and state of the 

 sky. 



(h) Temperature and barometric changes during the pass- 

 ing of a low. 



3. From the data accumulated at the various Weather 

 Bureau Stations since the establishment of the U. S. Weather 

 Service in 1870, state what appears to be true of : - 



(a) Any relation between the weather and " changes in 

 the moon," i.e., changes in its phases. 



(6) Accuracy in any detailed weather forecasts for a year 

 ahead. 



(c) The recurrence of approximately the same changes of 

 weather for recurring seasons. 



