477 
Hollow e¢ylindrical porch posts were split in at least one instance. Walls 
or foundations made of hollow cement blocks or hollow tile failed in 
many instances. (See Figures 9 and 10.) 
The entire end of the house shown in Figure 4 was blown outward. 
The end of the house may be seen lying in the foreground. 
Figure 5 shows a similar condition, though the house was greatly 
damaged otherwise. 
Two boys who were in Oak Park in the southwest part of the city 
just outside the path of the storm said that when the funnel passed by it 
Fic. 5. House in east Watertown, S. D., showing explosive effect of air during passage of tornado. 
looked like an elephant’s trunk and that hot and cold blasts of air passed 
over them “sometimes hot enough to roast them and sometimes cold enough 
to freeze them.” 
At Goodwin, east of Watertown, clouds of soot rushed from the ehini- 
neys “as if everyone had a rouring fire.’ Here ‘tthe storm appeared to 
stay higher up in the air, though chimneys toppled and smaller buildings 
were overturned.” 
Figure 6 is from a photograph taken by Mr. Ward Carr who was at 
a farm house three miles west of Watertown. The tornado is moving 
toward the left and seems to be at the forward point of a crescent-shaped 
cioud. The writer does not know whether this is the squall cloud of the 
thunder storm or not. The hour-glass shape of the tornado is notable. 
