24 SANDFORD FLEMING ON 



By thus numbering the hovir meridian we establish a direct relationship between the 

 reckoning in each zone or section, and the world's standard. This relationship may for 

 convenience be reduced to the following formula : 



Let H. be the number of the hour meridian and W. S. the world's standard, then 



(1) In the zone of hour meridian number 12 (duodecim) (corresponding with the 

 meridian of Grreenwich) the notation of the hours will agree with W. S. 



(2) In all EAST longitudes (zones to the east of hour meridian 12) the notation will 

 be in advance of W. S. ; the number of hours faster than W. S. will in each case equal 

 12 minus H. 



(3) In all WEST longitudes (zones to the west of hour meridian 12) the notation will be 

 behind W. S. ; the number of hours SLOWER than W. S. will in each case equal H. mums 12. 



By this principle of nomenclature the distinguishing number of each hour meridian 

 will be the key to the notation in the zone of that meridian ; it will likewise denote the 

 precise relation which each zone reckoning bears to the world's standard. The accom- 

 panying table will make this clear. 



Table showing the relationship between Zone-Beckonimj and the World's Standard. 



Hour Meridian No. 1, P^ast Longitude, by formula (2), 12— l=.^one-reckoning 11 hours faster. 



" '< 2, " " 12 — 2= " 10 hours faster. 



" " 2, " " 12 — 3:= " 9 hours faster. 



" " 4, " " 12 — 4= " 8 hours faster. 



" " 5 " " 12 — 5= " 7 hours faster. 



" " 6, " " 12 — 6== " 6 hours faster. 



" " 7^ " " 12 — 7= " 5 hours faster. 



" '' 8, " " 12— 8^ " 4 hours faster. 



" " 9j " " 12 — 9= " 2 hours faster. 



" " 10, " " 12 — 10== " 3 hour faster. 



'• " llj " " 12 — ll=Zone-reckoning 1 hour faster. 



" " 12, Prime Meridian by formula (1), reckoning identical with the World's Standard. 



" " 13, West Longitude, by formula (3), 13— 12=Zone-reckoning 1 hour slower. 



" " 15, 



" " 16, " " 



" '• 17, 



" 18, " " 



" " 20, " " 



11 a 21 " " 



" " 22 " " 



" " 23 " " 



(3) Notation of the Hours. 



In the interest of railway administration and in order to promote public safety and 

 general conveniences, a desire has been evinced to follow the recommendation of the 



