Phil. Mag. Ser. 6, Vol. 8, Pl. V. 
The goid foil used in the following six observations contained less 
than or per cent. of impurity. The photographs were taken by 
normally reflected light, with an objective of 0°65 N.A. The magni- 
fication is X 350. 
a , 
Pe RS Fw, we byes ' - ; « 
Als tree Pieiebes Rape sat gare Ne oe Ve i 
(A A Cae ae Nees) 
Regi oe Pee acy * Ae ae 
Natit so gk dae ee vy. 
# a4 4 A . 
Sa etc) EWES oy 8 
oe Fey mimic’ Puen ee Sd 
bees err, Sah te “y 
wi arianenetia hares hal 9 9s. > 
shes meer arabe rate 
Keil dsie de screw blastn’) Tt 
Pa deems ght ANS Rn OS sana iy 
osm bee an % ?, 
seen Eareetahe 
og ba ane Set, M ™ Seika wee, i 
ee ei 
se fa pa 
4 L . . font * “ . ‘ : 
ete: SEL, > F Se anh eg ere : oy ‘ BG 
oe SP PO a aoe ¢ Bit ae iy es k b) \ 
: 2S, ab ee < ‘ by Meptets . ar a eS ems on 
SI og Palatal nk thd eter My tee re ae Maen pee) 
SSB DR gs xa dl ms 2 ; 4 F “4 e 445, i E 
a peer <> Recap On ee gig ORO e py by 
eee eR Dh gtee Poe we j 
4% A Ls ¥ oy 
See on 
vee 
ca Ye 
Batt 
See ne 
bs 
ee 
Fic. 3.—Gold foil annealed and polished by pressing on glass surface. The flow has 
been insufficient to cover the surface completely with a flowed layer, so that the 
granular structure 1s not obliterated. 
Fie. 4.—Gold foil beaten out on polished steel anvil and lightly polished on rouged 
leather. ‘The surface is completely covered with a smooth brightly-retlecting 
layer, free from granular or other structure. 
