Mr. P. Barlow's Additional Experiments on Acacia. 1 7 



bach, Fraunhofer, Gauss, Arago, Olbers, Bessel, Encke, 

 Struve, &c. The same order was intended for General Mudge, 

 bul it was signified to the Danish ambassador in London, that 

 no English officer is permitted to accept of a foreign order, 

 unless he has been employed in the military service of the 

 state which offers it, and unless the order is given as a remu- 

 neration for his military services. This declaration prevented 

 the King of Denmark from offering the same order, as he in- 

 tended to do, to some of the most distinguished English phi- 

 losophers. We are not acquainted with the military regula- 

 tions here referred to; but we can assure our eminent cor- 

 respondent from whom we have received these facts, that 

 there is no power in England that can prevent a British sub- 

 ject from accepting of any honour that may be conferred upon 

 him by a foreign prince. 



V. Additional 'Experiments on the Strength and Stiffness of 

 Acacia. By Mr. Peteii Baulow, Jjin. As. Inst. Civ. Etig. 



' ' To the Editors of the Philosophical Magazine and Jouriial. 

 Gentlemen, 



TN my paper on the strength of different woods, printed in the 

 *- Phil. Mag. & Annals for March last, I stated my regret that 

 the results on the acacia specimens were not more satisfactory ; 

 and Mr. Bevan, in his remarks on those experiments, (Phil. 

 Mag. and Annals for April,) having expressed the same feel- 

 ing, I endeavoured to find the actual specimen alluded to in 

 my former paper, in which the rope broke, leaving the piece 

 uninjured, in order to repeat the experiment in a more com- 

 plete manner ; but I could only find a small fragment of the 

 tree from which the former was cut. It was nearer the out- 

 side, although of the same specific gravity, viz. '710. The 

 largest piece I could cut from the fragment was 37 inches 

 long and 1 \ inch square ; it was supported at 25 inches. The 

 deflection was taken very accurately, and found to amount to 

 •O75'of an inch as each of the first four cwt. were applied: 

 here the elasticity appeared to be injured, as the deflection 

 increased to '125, and continued to do so until the piece 

 broke with 896 pounds. 



According to this result the value of S in my table will be 



/to 

 S = - — j^ = 1659, which although less than the tabulated 



number for this wood, exceeds the average run of onk. 



Its elasticity will be (taking wj = '1.48 and 8 = "3 of an inch) 

 Third Scries.'Wol 1. No. 1. Juhj 1832. D 



