ON STEAM-SHIP PERFORMANCE. 61 



gulated conditions of time, pressure, and expansion, for the undermentioned period 

 (namely, from tlie 1st January to :31st March I860)." 



" Table VII. — Chester and Holyhead Eailway, Steamboats. Consumption of 

 coal for the twelve months ending December -31, 1860." 



" Table VIII. — City of Dublin Steam Packet Company. A retm-n of the average 

 time of passage and consumption of coal of the mail steamers for six months, end- 

 ing June 30, 1860." 



"" Table IX. — City of Dublin Steam Packet Company. A return of the average 

 time of passage and consumption of coal of the mail steamers for three months, 

 ending September 30, 1860." 



"Table A. — Resultats de la navigation des paquebots des services maritimes 

 des Messageries Imperiales pendant I'anuee 1859." 



ITo dimensions of those ships have been given ; and they have therefore 

 been left out of the present Eeport. 



" Table XI. — Resultats de la navigation des paquebots des services maritimes des 

 Messageries Imperiales pendant I'annee 1800." 



Of those ships also no dimensions have been given ; and they have there- 

 fore been left out of the present Report. 



" Appendix, Table XII. — Return of the average passages of mail packets, and 

 consumption of coal for six mouths, ending 31st March 1861." 



" Appendix, Table XIII. — Steamship 'Leinster,' on trial from Holyhead to Kinos- 

 tow-n, April 4, 1861." 



" Appendix, TaWe XIV. — Steamship ' Ulster,' on trial from Kingstown to Holy- 

 head, April 5, 1861." 



" 1862. Table II.— Return of the particulars of the dimensions of twenty vessels 

 in Her Majesty's Navy, with the results of their trials upon completion for service." 



" Table III.— Results of the performances at sea, and when on trial, of Her 

 Majesty's ships ' Colossus,' 'St. George,' and ' ^'Vi-rogant.' " 



Of these steamers also no displacement or indicated horse-power has been 

 recorded. 



"Table IV.— Residts of the trials of Her Majesty's Screw Ships, officially tabu- 

 lated by the Admiralty in 1850." 



" Table V.— Results of the trials of Her Maj esty's Screw Ships, officially tabulated 

 by the Admiralty in 1856." 



"Table VI.— Results of the trials of Her Majesty's Screw Ships, officially tabu- 

 lated by the Admiralty in 1861 (being a continuation of Tables IV and 'X' ) 

 Steam transport Service, Tables VII., VIII., IX., X., XI., XII., XIII., XIV., XV., 

 and XVI. (the last live Tables being summaries of the Tables VII. to XI.)." 



These Tables give the results obtained from vessels employed in trans- 

 port service during the latter part of the Crimean war, showing "the respective 

 values of the several steamships, classified according to the nature of the 

 employment, or the special character of the duties required to be performed ; 

 and giving, in addition, the cost of moving each ship 1000 miles, &c. 



''Table XVII. (continued).— Royal (West India) Mail Packet Company. St. 

 Thomas to Southampton, distance 3622 miles." 



" Table XVII.— Royal (West India) Mail Packet Company. Southampton to 

 St. Thomas, distance 3622 miles." 



In these Tables, namely, Tabic XVII. and Table XVII. (continued), no 

 draught of water is stated. They give the speed of the ship and consumption 

 of coals, under various conditions of the state of the hull, of five steamers, 

 viz., the ' Seine,' 'Tasmanian,' ' Atrato,' ' Shannon,' and ' La Plata.' 



" Table XVIH.— Royal (West India) Mail Packet Company. Summary made 

 from the Tables of diagrams from indicator and working of the engines belouo-ino- to 

 the various ships included in the return furnished of the performances from South- 



