190 , REPORT— 1861. 



Third Report of the Committee on Steam-ship Performance. 



Contents. 

 Report. 



Appendix, Table 1. — Table showing the results of the performance of H.M. vessels, fur- 

 nished by the Admiralty. 

 Table 2. — Table showing the results of the performance of six of H.M. vessels under 



various circumstances. 

 Table 3. — Table showing the results of the performance of H.M.S. ' Victor Emmanuel,' 



v?hen at sea. 

 Table 4. — Return of seven trials on the measured mile in Stokes Bay of H.M.S. ' Victor 



Emmanuel.' 

 Table 5. — Table showing the results of the performance of a number of vessels in the 



Merchant Service under various circumstances. 

 Table G. — Quarterly returns of the speed and consumption of coal of the London and 



North-Vv'esteni Company's express and cargo boats, imder regulated conditions of 



time, pressure, and expansion ; from January 1st to December 31, 1860. 

 Table 7. — Quarterly verifications of consumption of coal of the above vessels, from 



January 1 to December 31, 1860. 

 Table 8. — Return from the City of Dublin Steam Packet Company of the average time 



of passage and consumption of coal of the Mail Steamers for six months ending 



June 30, 1860. 

 Table 9. — Return from the City of Dublin Steam Packet Company of the average time 



of passage and consumption of coal of the Mail Steamers for three months ending 



September 30, 1860. 

 Table 10. — Return of the results of performance of 50 vessels in the service of the 



Messageries Imperiales, 1859. 

 Table 11. — Return of the results of performance of 50 vessels in the service of the 



Messageries Imperiales, 1860. 

 Table 12. — Return of average passages of Mail Packets and consumption of coal for six 



months ending March 31, 1861. 

 Table 13.— Log of Steam-ship ' Ulster,' April 6, 1861. 

 Table 14. — Log of Steam-ship ' Leinster,' on trial from Holyhead to Kingstown, 



April 4, 1861. 

 Circular as issued from the Committee on Steam-ship Performance. 

 Form as issued from the Committee on Steam-ship Performance. 



Report. 

 At the meeting of the British Association held at Oxford in June 1S60, 

 the Committee was re-appointed in the following terms : — 



"That the Committee on Steam-ship Performance be re-appointed, to 

 report proceedings to the next meeting. 



" That the attention of the Committee be also directed to the obtaining of 

 information respecting the performance of vessels under sail, with a view to 

 comparing the results of the two powers of wind and steam, in order to their 

 most effective and economical combination. 



"That the sum of £150 be placed at the disposal of the Committee." 



The following noblemen and gentlemen were nominated to serve on the 

 Committee : — 



Vice-Admiral Moorsom, 

 The Duke of Sutherland 



(formerly Marquis of Stafford). 

 The Earl of Caithness. 

 The Lord Dufferin. 

 William Fairbairn, F.R.S. 

 J. Scott Russell, F.R.S. 

 Admiral Paris, C.B. 



The Hon. Capt. Egerton. R.N. 

 William Smith, C.E. 

 J. E. McConnell, C.E. 

 Professor Rankine, LL.D. 

 J. R. Napier, C.E. 

 R. Roberts, C.E. 

 Henry Wright 



(Honorary Secretary). 



With power to add to their number. 



The following gentlemen also assisted your Committee as corresponding 

 members ; — 



