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according to LEBESGUE, possess in our terminology with respect to each 
other an odd looping coefficient. But to justify his definition LEBESGUE 
has neglected to prove that the being enlaced or not of two spaces is 
independent of the manner in which they are measured, which 
property is established only by the above reasonings. 
The developments joined by LeBESGUR to his definition can mean- 
while be made entirely rigorous by replacing the notion “enlaced” 
by: “enlaced for a definite mode of measurement.” 
(June 25, 1912). 
