228 



Sleam-Engines. 



tian, of Claude, of Rubens, and of Rembrandt, spurn all relation 

 with this description of map-makini?. 



On proceeding to the third, or repulsive class of subjects, which 

 are impossible to be told by art, there were mentioned, as in- 

 stances, the Delivery of the Keys to Peter, painted by Raphael, 

 the Testament of the Athenian, and Moses in the Bullrushes, by 

 Poussin. These were compositions without subjects. 



XL. Iiitetlh'ence and Miscellaneous Articles. 



STEAM ENGINES IN CORNWALL. 



X* ROM Messrs. Leans' Report for February 1S18, it appears 

 that during that month the following was the work performed by 

 the engines riBported, with each bushel of coals. 



Founds of rruler liflcd 

 ifout /ligh tcilh each b-ixfief. 

 25 common engines averaged 22,424,449 



Woolf's at Wheal Vor 

 Ditto Wh. Abraham 



Ditto ditto 



Ditto Wheal Unity 



Dalcouth engine 

 Wheal Abraham ditto 

 United Miiies engine 

 Treskirby ditto 

 Wheal Chance ditto 



26,158,828 

 35,364,694 

 28,012,278 

 32,306,943 

 41,354,103 

 36,180,740 

 31,830,623 

 39,375,488 

 32,319,967 



Load per square 

 inc/i ill cylinder. 



various. 



17-2 lib. 



16-8 

 5-3 



131 



11-2 



109 



14-6 



10-6 

 8-9 



THE NORTHERN EXPEDITIONS. 



. \Ve are anxious to correct a mistake in our last Number. It 

 is not true that any difficulty was experienced in obtaining suitable 

 hands for the voyage, and that, in consequence, the vessels will 

 complete their crews at the Orkneys. On the contrary, so many 

 men offered their services, that four times the number of ships 

 might have been instantly manned; and in fact most select crews 

 have been obtained, composed of men from those parts of our 

 coasts which experience has proved to furnish persons naturally 

 endued with the largest portion of bottom, hardihood in dangers, 

 and unconquerable spirit — qualities which do not belong to the 

 i.eamen of the very northern regions, who, though from necessity 

 they often expose themselves to cold, are easily depressed by 

 d lingers, and therefore but little qualified for such enterprises as 

 are now contemnlated. 



These expeditions have excited a great degree of interest, not 

 merely among philosophical and speculative men, but among all 



cl asses ; 



