Joseph Marshall Flint 
ABBREVIATIONS. 
b = Gill pouch. 
a= Head gut. 
c= Pulmonary anlage. 
h = Ductus hepaticus. 
o = Msophagus. 
ad = Arteria pulmonalis dextra. 
T = Trachea. 
d= Right stem bronchus. 
$= Left stem bronchus. 
as = Arteria pulmonalis sinistra. 
v = Vena pulmonalis. 
Bol, G2, b:3, G4, &. 5, L.0, ete: The lateral series’ of ‘bronchi. 
D2. D.3, D.4, D:5, D. 6, ete, = The dorsal series of bronchi. 
V.2, V.3, V.4, V.5, V.6, etc.= The ventral series of bronchi. 
M.4, M.5, etc.= The medial series of bronchi. 
ap = Apical branch of left L. 2. 
m= Medial branch. 
d= Dorsal branch. 
1= Lateral branch. 
v= Ventral branch. 
$= Superior branch. 
4= Inferior branch. 
In the combined abbreviations: 
di = Dorsoinferior branch. 
li = Lateroinferior branch. 
vs = Ventrosuperior branch, etc. 
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