298 
HARRINGTON. 
All examination of the individual effects of cyclones and 
anti-cyclones, resulting from their geographical position, 
brings out several results, some of which are unexpected. 
Cyclones west of the continental divide have no appreciable 
effect. As they pass over the divide north of Texas they pro¬ 
mote the northward extension of the southerly winds until 
the center passes the meridian of eastern Texas. After that 
they tend to suppress the southerly winds, but they gen¬ 
erally have much less influence when retreating than when 
advancing. When a cyclone passes along Texan latitudes 
and over that State there is less effect than might be ex¬ 
pected. When a cyclone forms in Texas or in the adjacent 
part of the Gulf, the effect on the southerly winds is very 
marked. This is especially true in the initial stages of a 
cyclone. In such cases the Texan winds are in confusion, 
and it is only by examining subsequent maps that the 
causes are manifest. As soon as the development of the 
cyclone has reached such a stage that the isobars and iso¬ 
therms are irregular and bent, but before a distinct area of 
low pressure can be detected, the southerly winds yield the 
struggle and the wind vanes set to all directions. 
The anti-cyclone has decidedly more effect than the cy¬ 
clone, as might be expected, seeing that it reverses the slope 
of the isobaric surfaces. An interesting'fact is that the anti¬ 
cyclone effect on the Texan southerly winds is more pro¬ 
nounced when it is east of the Mississippi river than when 
west of it. An anti-cyclone over the upper lakes has greater 
effect than one culminating in the Dakotas. One central in 
Tennessee or even in Alabama will have, while one off the 
Georgian coast may have, a marked effect. Even from 
Ontario it may have greater effect than to the westward.* 
On the a. m. map of July 22, 1891, an anti-cyclone over 
Maine appreciably disturbed the southerly winds in Texas. 
When an anti-cyclone is over or near Texas it controls 
the winds generally. It may set them only one or two 
points away from the north or it may reverse them. 
*See War Department weather map for June 20, 1891, and the days im¬ 
mediately following. 
