cones off of liis run, instead of going out '?i"^h -he same en- 

 gine , ho goes out with any engine available at that 'j line, and 

 in that way a greater mileage is attained froi.i the engine. 

 The failure of an online is measured in terras of its lowest 

 mileage. Toil can readily seo that if an engine io in porfoct- 

 137 rood order and ic laid aside waiting until the man who ran 

 that online oof ore comos to i-tui it acc-in, there laay "be con- 

 siderable doad time. It was thought hot/ovor, that the human 

 factor -./oulcL more than offset that dead time if the engineer 

 conld he interested in maintaining his online irj to a hi^;h 

 s'uage of oif iciency. Under the pooling system there is no 

 jorsonalit"..' E.ttachod to the .;n,ino a::d hence a man sc.id: !T I 

 TS&J have this c;.iSi ne tomorrow and I may not :r ; and if a "bolt 

 gets looco, or "^he hacking ge'JS loose, or some other minor 

 thin-3 spes wron^, he "_'a' : 'S no particular attention to it hut 

 tTirns it over to 'Jhe shop and lots them fi^ it; \7hile u.ader 

 the old system, the first systom, evory man had his own en- 

 gine and ".\Q thought as much of that engine as 37011 or I rni^-ht 

 fchinli of a pet dog. Ho groomed it, ::ept it polished, ",:ept 

 the "bolts tightened and too!i a groat deal of prido in oaying: 

 "M3 r engine has not "been in the shop f ;.r such and such a length 

 o' tine . " 



How, it 112.5 actually "been found that the assignment 

 of engines has roal^ aif acted a larger usage, oven in spite 



of the d ad time, "because the time that an erriiie ic in the 



3CV 



