Mr. Ellice Clarke gives the following as the cost of Val de Travers compressed asphalte.[95] The cost is reduced to 100,000 tons per annum per yard of width. ----+-------------+-----------+-----------+----------+---------+---- |Original Cost| Interest |Maintenance|Scavenging| | | per Square |on original|per Square |per Square| | | Yard. | Cost. | Yard. | Yard. | Total. | +-------------+-----------+-----------+----------+---------+ | _s._ _d._ | _d._ | _d._ | _d._ |_s._ _d._| | 18 0 | 9·7 | 3·6 | 0·4 | 1 1·7| ----+-------------+-----------+-----------+----------+---------+---- Nothing is charged for renewal, as the annual sum for maintenance provides the asphalte in perpetuity.[96] The following table[97] may here be of use: TABLE SHOWING THE AGREED COST PER ANNUM OF CERTAIN ASPHALTE CARRIAGEWAY PAVEMENTS IN THE CITY OF LONDON. -----------+------------+--------+----------+-----------------------+ | |Years to| First | Agreed Cost of | | |be main-| Cost | maintenance | | | tained | per | per Square | |Description | by Con-| Square | Yard for the | Situation.|of Asphalte.|tractor.| Yard. | Contract Term. | -----------+------------+--------+----------+-----------------------+ | | |£ _s. d._| | Cheapside | Val de | 17 |0 18 0 | 2 years free | and Poultry| Travers | | |15 years at 1_s._ 6_d._| |(Compressed)| | | = £1 2_s._ 6_d._ | | | | | | Gracechurch| Ditto | 17 |0 17 0 | 2 years free | Street | | | |15 years at 1_s._ | | | | | = 15_s._ 0_d._ | | | | | | Finsbury | Ditto | 17 |0 16 0 | 2 years free | Pavement | | | |15 years at 9_d._ | | | | | = 11_s._ 3_d._ | | | | | | Moorgate | Ditto | 17 |0 16 0 | 2 years free | Street | | | |15 years at 9_d._ | | | | | = 11_s._ 3_d._ | | | | | | Ditto | Limmer | 17 |0 16 0 | 2 years free | | (Mastic) | | |15 years at 9_d._ | | | | | = 11_s._ 3_d._ | | | | | |