Analyzing these several grounds of defence, a distinction should be made at the start between three varieties of basing point.
Contrast between the basing point and trunk line systems, 380.
The basing point enjoys a still further advantage in that it gets even lower than the combination rates.
The second, the basing point system, is found throughout the southern states east of the Mississippi.
From that gateway as a basing point I can think out a rate sheet with fewer differentials.
This basing point system, although not absolutely confined to the South, has been more highly developed here than elsewhere.
But, in many other cases, market competition from other centres of supply set the limit to the rate at the basing point.
A number of economic defences for the basing point system have been urged by the carriers at different times.
At this point a second defence of the basing point system arises.