CONTENTS.

PART I.

Page

Tubular bridges . 1

Correspondence. 5

Cellular tubes . 17

Correspondence. 18

Tubes with a corrugated top . 19

Remarks relative to rectangular cellular tubes . 20

Remarks, &c. 22

Causes of delay. 23

Correspondence . 24

Cellular tubes . 25

Correspondence . 26

Form of the Reports to the Directors. 27

First suggestion of a tubular girder bridge. 28

Observations relative to the Reports to the Directors . 30

Observations, &c. 32

Mr. Stephenson’s Report. 33

Mr. Fairbairn’s Report. 37

Mr. Hodgkinson’s Report . 42

Auxiliary chains . 48

Auxiliary chains.—Correspondence. 48

Auxiliary chains, &c. 50

Correspondence. 51

Remarks . 53

Mr. Hodgkinson’s Letter relative to the experiments . 55

Mr. Stephenson’s reply . 58

Correspondence. 59

Mr. Hodgkinson’s experiments not used. 63

Calculations of the strength of the Conway Bridge . 64

The model tube .

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