. Annual report ... of the Board of Agriculture for the year ending June 30th ... or law of storms for this hemisphere, viz. : Stand withyour back to the wind and the barometer will be lower on your leftthan at your right. In C3Tclones the wind circulates in the oppositeway to which the hands of a watch move, with a slight indraught;while in anti-cyclones the wind circulates in the same way as thehands of a watch, but with a little outward motion. Nearly all ofour weather is of the cyclonic or anti-cyclonic type, and is dependentupon the form and distribution of the isobars. It is by the aid o
. Annual report ... of the Board of Agriculture for the year ending June 30th ... or law of storms for this hemisphere, viz. : Stand withyour back to the wind and the barometer will be lower on your leftthan at your right. In C3Tclones the wind circulates in the oppositeway to which the hands of a watch move, with a slight indraught;while in anti-cyclones the wind circulates in the same way as thehands of a watch, but with a little outward motion. Nearly all ofour weather is of the cyclonic or anti-cyclonic type, and is dependentupon the form and distribution of the isobars. It is by the aid ofsuch charts, and the known direction of the wind and the barometer,hygrometer, and popular signs by practiced observers, that we are en-abled to foretell the weather. CYCLONE PROGNOSTICS. We will first take a well formed cyclone. In the accompanyingdiagram, Plate xvm, the broad features of the relation of cloud andrain to a cyclone center are shown, the full line indicating the path ofthe depression, and the dotted line at right angles to it is the trough,or lowest Plate XVIII. 384 VERMONT AGRICULTURAL REPORT. As explained by the signal service notes, we find in the extremefront of the depression there is a blue sky, then, as the barometer be-gins to fall, and sometimes even before that takes place, a bank ofcirro-stratus, preceded by a halo-bearing sky, makes its appearance,which gradually becomes lower and denser, and forms an overcast,dirty sky. In the whole front of the depression the temperature rises,and the atmosphere feels muggy and close. In the right hand frontthe clouds assume the cumulo-stratus type, with driving rain later the left-hand front the air is cooler, but still oppressive, with aneasterly wind and overcast sky, succeeded by drizzling rain or ill-defined showers. When the trough of depression has passed, thebarometer begins to rise, the wind changes and becomes squally, withshowers of rain ; the air grows cooler, and the clouds break and
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectagriculture, bookyear
