80 
TRANSACTIONS OF THE TEXAS ACADEMY OF SCIENCE. 
tlie suction pipe to the lower level, and connect the discharge pipe of the 
blower with the air tower. The capacity of the apparatus need not be 
greater than is required to produce the initial disturbance, or the nucleus 
of the storm, as when the precipitation of rain begins the storm will in¬ 
crease from natural causes. To augment the amount of moisture in the 
air trunk I divert the exhaust pipe of the blower engine into the trunk, 
thereby surcharging the air in the trunk with the exhaust steam of the 
engine.” 
The proposed air tower would be comparable in height to the Eiffel 
tower, and therefore comparable in expense. Mr. Astor has got the 
cranky idea that he has only got to pull a trigger and nature will do the 
. rest. It would certainly be advisable to deal economically with the ex¬ 
haust steam of the engine, for it would probably contain more water than 
the arrangement could bring out of the atmosphere, notwithstanding the 
enormous expense of an Eiffel tower. 
