708 EAEL OF EOSSE ON THE CONSTEUCTION OF SPECULA OF 6-FEET APEETUEE, 
Abbreviations used in the Description of the Nebulce. 
B denotes bright thus 
b — bright, or brighter .... — 
br 
cl. 
d 
E 
e 
F 
f 
fig. 
g 
L 
1 
M 
m 
neb. 
neby. 
n 
P 
P 
pos. 
R 
r 
S 
8 
V 
VT 
broad — 
cluster. 
double — 
elongated — 
extremely — 
faint. 
following — 
figure. 
gradually — 
large — 
little — 
middle. 
moderately — 
nebula. 
nebulosity. 
north. 
preceding (when by itself 
or combined with n 
or s) — 
pretty (in other cases) . . — 
angle of position. 
round. 
resolvable. 
small. 
south (when alone or 
combined with p or f ) ; 
suddenly (in other cases) — 
very — 
extremely — 
pB means pretty bright. 
pbM means pretty bright in the middle. (Large B applies to the neb., 
small b to a part.) 
40" br = forty seconds broad. 
d#= double star. 
E. n. and s = elongated in the direction north and south. 
eF = extremely faint. 
the f. of two = the following of two. 
gbM = gradually bright in the middle. 
pL = pretty large. 
IbM = little brighter in the middle. 
mbM = moderately bright in the middle. 
np = north preceding. 
pB = pretty bright. 
sf = south following ; sbM = suddenly brighter in the middle. 
vF = very faint. 
wF extremely faint. 
