The geometrical interest enters the transfer-collecting process in many ways: in the envelope making, in the understanding of street and car routing, in the measurement of transfers, in the allotment of divisions and sub-divisions in the file code, and in the making of routing and distribution maps. One who is interested in arithmetical or statistical figuring can work it into transfer collection in connection with the calculation of car indexes, as well as figuring the possible number of combinations in different varieties of date codes, or in different combinations of print and color, or of fronts and backs. Such figuring also enters into the score kept of the number of transfers in the collection and checking it up the count of each envelope.
This sort of figuring leads to the question of the effect of different sorts of street arrangement (rectangular blocks, diagonal streets, haphazard crooked streets, etc.) on city traffic. Here the most effective arrangement for traffic purposes is that which gives, on average, the shortest distance between two points: and, surprising as this may seem, it is not straight streets that accomplish this most effectively. In a rectangular block city, the average percentage of excess of street distance over air distance is about 24 per cent, while in a city of crooked, haphazard streets such as Boston, it is nearer 6 per cent. The latter arrangement also makes many lines of crosstown transit possible that would be difficult to arrange otherwise, and naturally has its effect on the car index, which indicates the effectiveness of the transit service. Note the high car index of Boston as given in Section 66, is probably partly due to this circumstance.
« Older Vincent Price actor, gourmet and horror icon was b... | The Fiction Liberation Front:... Newer »
This thread has been archived and is closed to new comments
Buy a Shirt