477 



Hollow cylindrical 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 



Fig. 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 

 lo freeze them." 



At Goodwin, east of Watertown, clouds of soot, rushed from the chim- 

 neys "as if everyone had a roaring fire." Here "the 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 

 cloud. 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. 



