104 DICTIONARY OF BIRDS 
ma g 
= g S g 
: Z E = 3 
5 ma = 5 s 
= fe 2 a = 
3 (S) Oy Ss 
i) A om S 
O AS) Bs 
za = 
| q 
& n 
El el 
3g 5 
nm 
ee Z 
u eto WI fq 
2 3 S§ OH a 3@ S 
Be i aura 2 
— L; 
ae i - om Ope) os tke a 
3 Eee ere 2 
(2) 3 oo, A 3 
oe OO Ge 8 oO | 
ra aah os Pear oe | <q 
Ses ee 5 Ou 
5 2 a g a 
Sos 5 
[em 
ae 2 
n 
o Oo 
Bib siees 5 F 
oO | ol I 
d & a S & 
oy feej XS n n i 
Fa 8 ae 2 ‘Ss ty 
Ome & &o 3 = 
reba i O “a es 
me ey ie) 2 Oo 
O 8 Gal Seb ee Pte! ica] 
3 Aya Od se 
pI od me 
3 & aa 
z "3 : 
i=) 
a 8 ee eS 
SS ao S) 
& rs 
S a 
a =) 
= ey 
<x w 
Horizontaut Progecrion! of the GmnrEALOGICAL Trer of the Subclass 
Aves Ornithure. After Fiirbringer (op. cit. p. 1568.) 
1 SireWilliam Flower (Proc. Zool. Soc. 1869, p. 87) seems to have been the first 
Zoologist to use this convenient way of expressing relationships by thus representing 
a transverse section of the diverging genetic lines or branches of a genealogical tree. 
In practice, however, it comes to much the same thing as the Maps of Classification, 
described by Strickland to the British Association in 1840 (Ann. Wat. Hist. vi. pp. 
190, 191, pl. viii.), of which a large one designed by him is now in the Cambridge 
Museum ; but his trees were of course only metaphorically genealogical, and so 
differed in principle. 
