STATE AGRICULTURAL SOCIETY. 



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JHoute, of Setts Breeze atul/ Clouds 



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The arrows show the course of the sea breeze. The profile at the bottom 

 of the diagram shows substantially the hill obstruction which the sea 

 breeze encounters in its northeasterly course. I need scarcely mention 

 that the summer heat of the interior land surface, lying to the eastward, 

 rarifies and raises the atmosphere there, and draws in the cooler atmos- 

 phere from the adjacent ocean, just as the heated air over the fire rises in 

 the chimney and draws in the cooler air from about the fireplace. 



Now follow the arrows. Commencing at the ocean, the ocean breeze 

 (bearing much or little fog) literally bumps against and rises above the first 

 row of coast hills. These hills are, say, 400 feet high south of the Golden 

 Gate, and twice that height north of the Golden Gate. This pitches the 

 general breeze 400 to 800 feet above the sea level in its flight inland. It 

 has then only from 10 to 14 miles to go until it would encounter the second 

 row of coast hills. This second row is substantially twice as high as the 

 first. The result, and the fact is, that the general ocean breeze cannot and 

 does not descend in its course anywhere near the water level between 

 these two rows of hills. Being pitched up by range No. 1, it bears its 

 moisture and maintains its course high enough to pass over and up on the 

 top of range No. 2. The fog clouds, as a matter of fact, scrape the top of the 

 second row of hills and then pass on northeastward. 



