306 



Mr. J. Y. Buchanan. 



[Feb. 11, 



Table V. — Aluminium. Date, January 11, 1904. Temperature, 9° C- 

 Wire No. 20 S.W.G. Length, 75-35 inches. 





Pressure, 

 P. 



Changes of length. 



Compression 

 per million. 



10* 5 s = S. 



-OK 



/ O oO 



Linear 



No. 



Right arm, 

 r. 



Left arm, 

 I. 



Sum, 

 r+l = S. 



compressi- 

 bility, 

 S/P = A. 



1 



2 

 3 

 4 

 5 



atm. 

 195 -5 

 161-5 

 230 -0 

 178-5 

 256 -0 



in. 

 -005542 

 -004900 

 -006667 

 -005334 

 -007251 



in. 

 -002616 

 -002152 

 -002742 

 002109 

 -002995 



in. 

 -008158 

 0-007052 

 -009409 

 -007443 

 -010246 



114 -22 

 93-58 



124 -86 

 98 -77 



135 -96 



0-584 

 -579 

 0-543 

 0-553 

 0-531 



| 













0-558 



Table VI. — Magnesium. Date, January 17, 1904. Temperature, 9° C 

 Wire No. 22 S.W.G. Length, 75-2 inches. 



No. 



Pressure, 

 P. 



Ch 



Eight arm, 

 r. 



anges of leng 



Left arm, 

 Z. 



th. 



Sam, 

 r + l = 3. 



Compression 

 per million, 



106 J_ = S< 

 75-2 



Linear 

 compressi- 

 bility, 

 S/P = A. 





atm. 



in. 



in. 



in. 







t 



204 



-009167 



0-C07120 



-016288 



216-61 



1-062 



2 



204 



-010001 



-006202 



-016203 



215 -48 



1 -056 



3 



204 



-009917 



0-006329 



-016246 



216 -07 



1-059 



4 



204 



-010418 



005991 



'016409 



215 -57 



1 -057 



5 



204 



-010543 



-005442 



0-015985 



212-60 



1 -042 



6 



204 



-011251 



-004852 



0-016103 



214 -16 



1 -050 















1 -054 



Table VII.— Summary. 



Substance. 



Year. 



Atomic 

 weight. 



Density. 



Compre 

 Linear. 



ssibility. 

 Cubic. 



Gold 



)> j» • ■ * - 

 „ German .... 



1904 



55 

 55 

 55 

 55 



194 

 197 

 63 

 27 

 24 



21-5 

 19-3 

 8-9 

 2-6 

 1-75 



-1835 

 0-260 

 0-288 



0- 558 



1 -054 



1- 33 

 -973 

 1-02 

 0-846 



-5505 

 0-780 

 0-864 

 -1674 

 3-162 



1875 

 1880 

 1904 



55 



200 



13-6 



2*-968 

 2-494 



3-99 



2- 92 



3- 06 

 2-54 



