Corrigenda for “An Introduction to the Study of Air Mass and 
Isentropic Analysis,” by J. Namias and others, 5th ed. 
Page 5, table at bottom of page, lines under “Condition” and “Type of equi- ) 
librium”, should be deleted and the following should be substituted (the 
preferred terminology is italicized :— 
a<p (Absolutely) stable 
a= Neutral for saturated air (equal to wet-adiabatic 
lapse rate) 
B<a<y (Conditional:) stable for dry air, unstable for 
saturated air. 
a=y Neutral for dry air (equal to dry-adiabatic lapse 
rate) 
y<a<342C* per100m (Absolutely) unstable (but not self-starting) 
a = 8.42°/100m_ Upper limit of mechanical stability 
[a> 3.42°100 m Mechanical instability, or auto-convective gradient 
(self starting; hence this is not an equilib- 
rium) J 
Page 6, col. 2, line 8 of footnote, “J.-J. Jang” should read or 
Page 14. col. 1, line 11, “T/P2*” should read “T/p: Cs Te NAAN CINE SWS Fa 
Page 14, col. 1, line 18, “wet-bulb temperature” should read eet pels poten- 
tial temperature.” 
Page 69, line 7, “Su” should read “Sc.” 
Page 71, top, line 4, delete “warm.” 
Page 150, col. 2, line 4, “stream function” should read “isentropic accelera- 
tion potential” (see BULLETIN A. M. S., Jan. 1941, p. 45). 
Page 172, line 18 (in fine print) “frontal at” should read “frontal topogra- _ 
phy at.” . 
Page 174, line 9, “15 km” should read “18 km or higher.” — 
Page 174, line 10, “by 10 mb” should read “by 9 mb.” 
Page 175, line 1, “In Fig. 6, shown above is” should read “Fig. 6 above is”. . . 
Page 175, line 3, “tions shows” should read “tions. It shows.” ; Me 
Page 228, 2nd col. line 34, “to dry air” should read “to saturated se te ue 
33, after “entire” insert “originally stable”. , 
Page 229, 2nd col., lines 2 and 3 from bottom, “decreases? should read 
“increases.” | i et 
Page 282, 2nd col. 3rd line from dovowt Fuge “equal”. Pa wea 
[Supplement to the June 1941 Bulletin of the American Meteorological Society) = 
