504 
MR. C. H. LEES ON THE THERMAL CONDUCTIVITIES 
Mahogany Disc, 1'93 cm. diam., '056 cm. thick, cut from a sheet of “veneer” 
used by cabinet makers. Air, 15 c, 9 C. 
Cool bar. 
Hot bar. 
r x 6'67 Aj 6'89 
v x 20-75 A 2 20-07 
v 2 3'06 Q x T107 
v 2 28'51 Qo 1167 
fr — 41 ()7 x "056 x 1'0006 _ , n Q n ^ 
■1167 x -056 x 1-0006 
A ' 2 ~ 20-57 x 1-002 - 6 r 89 _ ' 0004/ ‘ 
1 20-57 - 6'89 x i'002 
h mean = '000465. 
Walnut Disc, 1'93 cm. diam., '069 cm. thick, cut from a sheet of veneer. 
Air, 16°'0 C. 
Cool bar. 
Hot bar. J 
i\ 511 A x 5’29 
v 2 2-14 Q x -0917 
A-, — x ’ 009 x — -0L0363 
rj 22'60 A 2 22 46 
v 2 29-52 Q 2 -0888 
, -0888 x -069 x L001 
1 22-46 — 5-29 x L004 
~ - 22-46 x 1-004 - 5-29 ~ UUUu&u 
h mean = '000360. 
Cork Disc, 1'93 cm. diam., '05 cm. thick, cut by a section-cutting machine from 
sound cork. Air, 15°T C. 
Cool bar. 
Hot bar. 
v x 2-22 A x 2-33 
v 2 -34 Q x -0530 
, -0530 x -05 x 1-002 
t-j 23-39 A 3 23 30 
v 2 29-10 Q 2 -0547 
7 -0547 x -05 x 1-002 
1 “ 23-30 - 2-33 x 1-005 ~ 
hn — r \o .)A l LA - n oO UvUJLOU 
23-30 x l'OOo — 2'33 
A- mean = '000129. 
Silk Sheet, '0084 cm. thick. This was cut from a dress piece of plain brown silk 
Air, ] 6°'4 C. 
Cool bar. 
Hot bar. 
v x 10-06 A x 10-39 
v 2 4-95 Q x -1600 
, -16 x -0084 
k ' “ 16-76 - 10-39 “ 000210 
v x 17 - 03 A 2 16"76 
v 2 26 - 35 Q 2 "1690 
, -169 x -0084 A 
~ 16-76 - 10-39 — 00CL ‘ j3 
k mean = '000216. 
