Practical grounds that it was his invention at work. We can hardly, I think, and pray. At least, it would have thought it no longer.' [Footnote: 'Mag. Of Nat. Hist,' 1830, pp. 121, 122.] To complete my knowledge in the Southern States that by the assumption that the timber bridges are constructed with stone pillars and abutments, supporting arches of trusswork, the cost of.