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POPULAR SCIENCE MONTHLY 



the race, as did our predecessors in ante-chronometer days. Medals 

 are given for races won and not for records beaten. 



It is, perhaps, our attachment to the interest of the momentary 

 race, and our ordinary indifference to the record, that accounts for the 

 absence of enquiry into the laws of racing speeds. If we ask either an 

 athlete, or a non-athlete who is athletically informed, what is the rela- 

 tion of a runner's speed over a long course to that over a short course, 

 he will immediately reply that a racer over a short course, like 100 

 meters, runs at a higher speed than over a long course, like 3 kilometers. 

 But if he is pressed for an estimate as to how much faster the racer 

 runs as the course is shortened, he will either be likely to express in- 

 difference, or to intimate the opinion that a precise answer is impossible. 

 Nevertheless, it is self-evident that the long list of records which have 

 been established up to this date for runners on courses varying from 

 20 yards up to more than 600 miles, determine the average speed which 

 the makers of those records severally adopted. 



The records reported in the New York Times as having been made 

 by the winners of the flat races in the London Olympiad last July are 

 collected in the following table : 



In the accompanying illustration, these records are plotted on a 

 specially ruled paper known to engineers as " logarithm-paper " or 

 "log-paper," in which equal multiples scale equal distances, both verti- 

 cally and horizontally. The horizontal scale represents course-distances 

 in meters. The vertical scale represents running times in seconds. 

 The stars near the numerals 1, 2, 4, 8, 15 and 420, locate the Olympian 

 records for 100, 200, 400, 800, 1,500 and 42,190 meters, respectively, 

 according to the table already considered. The various circular dots 

 indicate world's records for running, taking the best from professional 

 and amateur lists published in the New York " World " Almanac. 

 The straight line is drawn through the record for 500 yards (457. 

 meters), and also through the record for 7 1 /2 miles (12,070 meters). 



1 This contest was reported "no race" in the New York Times of July 24. 

 The time, however, is here taken as that of the best preceding trial heat, won 

 by Haswelle. 



