482 lbs. avoirdupois. 



S96 



357 



343 



329 



455 lbs. avoirdupois. 



435 



405 



and Specific Gravity of various Specimens of If'ood. 367 



" The order of Strength, as ascertained by their being broken 

 by the application of weight, was, 



1. English oak, King's Langley 



2. Long Sound yellow fir 



3. Riga oak (wainscot) . . 



4. Christiana white spruce . . 



5. American pine, from Quebec 



6. White spruce fir, from Quebec 285 



7. English oak, from Godalmin 218 

 " Other trials of Strength were as follows : 



1 . Alice Holt forest, full grown ^ 

 timber No, 1 . . • ' S 



2. Dantzic fir, yellow 



3. Alice Holt forest, full grown \ 



timber, No. 2 . . . . J 



4. Christiana yellow fir 



5. Archangel, ditto 

 From the manner in which the foregoing statement is given in 



the Report, most people would be apt to conclude that these ex- 

 periments were actually made by Mr. White himself; whereas, 

 in fact, they were made by Mr.Tredgold, and published in the 

 year 1 820, in pp. 34, 35 and 44, of his Elementary Privciples of 

 Carpentry. We understand that all the claim which Mr. White 

 lias to these experiments is his having furnished Mr. Tredgold 

 with the specimens. 



The following is copied from the Appendix. 



" Na\7 Office, IPth Feb. 1821. 

 " An Account of the Specific Gravity, Strength and Deflection, of 

 the several Kinds of Foreign Fir, as found by Mr. Peter Bailow, 

 by Experiments made under his Inspection, from Timber sup- 

 plied from His Majesty's Yard at Woolwich. 

 *' N. B. The pieces tried, were eight feet long, two inches square, 

 supported by props seven feet apart, and had the weights 

 placed in the middle of each piece. 



370 

 330. 



Names of the Woods!. 



American red pine 



New England fir, or yellow pine 



Riga fir 



Norway spar 



** These experiments do not appear to have been extended to 



Dantzic 



