Popular Science Monthly 



551 



springs. It is evident that the passengers 

 are tossed up and down for greater dis- 

 tances than the car itself when an obstruc- 

 tion is overridden. 



The records seem to show that on the 

 whole the passenger in the rear seat is better 

 off than the man in the front seat. The 

 man in front gets two jolts for each bump, 

 first when the front wheels pass over the 

 obstruction, and second, when the rear 

 wheels pass over it. 



On the other hand, it is'evident that the 

 passenger in the rear seat, represented by 

 the top line, is jolted once only by the ob- 

 struction, the wave in the line showing 

 the spring action. It is clear that the 

 passenger in the rear seat is thrown up 

 appreciably higher than the passenger in 

 the front seat. 



At last it becomes possible to analyze 

 exactly the performances of different auto- 

 mobiles, or of the same automobile, with 

 variations in such accessories as the leaf- 

 springs, cushion-springs, inflation pressure 

 of the tires, shock absorbers, stiffness of the 

 frame, weight of the axles, etc. So that 

 the unproved statements of the manufac- 

 turers need no longer be all that accom- 

 pany such appliances. 



What's This? A 

 Mosque? No, 

 Just a Flag- 

 man's Shelter 



A FLAGMAN'S 

 shelter house, 

 made up of old loco- 

 motive parts, guards 

 a street crossing on 

 the Southern Pa- 

 cific at San Jose, 

 Cal. The shelter 

 was constructed by 

 the consulting engi- 

 neer from old engine 

 wheels, springs, tires 

 and other parts of 

 discarded locomo- 

 tives. 



Besides being an 

 oddity in appear- 

 ance, it is solidly 

 built and one of 

 the most elaborate 

 shelters for flagmen 

 in the state. It is 

 the curiosity of the 

 locality. 



Ah, yes, a little Mosque where pious Moham- 

 medans may pray. San Jose knows better. 

 It is a flagman's shelter made of old scrap 



The skull is made of paper and was used by 

 Army Medical Students for anatomical study 



The Army Medical Museum's , 

 Giant Skull 



COMPARED with the man standing be- 

 side it, the huge skull shown in the 

 accompanying photograph would appear to 

 have belonged to a person about 

 thirty feet high and to be reminiscent 

 of the times when 

 "There were giants 

 in those days." As 

 a matter of fact, it 

 is not a real skull, 

 but a papier mache 

 representation of 

 one, a little over 

 four feet high. It 

 stands in the Army 

 Medical Museum 

 at Washington, and 

 was greatly exag- 

 gerated for pur- 

 poses of anatomical 

 study. 



The skull is per- 

 fect in every detail. 

 The students study 

 not only the con- 

 struction of the hu- 

 man skull but meth- 

 ods of trepanning 

 and of mending all 

 the different varie- 

 ties of fractures. It 

 is also used in in- 

 structing the classes 

 in dental surgery. 



