A. R. Galloway 
19 
The Cochin shows the variability which we have seen to occur in cinnamon 
canaries and hybrids. 
(1) According to Tegetmeier {Poultry Book, 1867) this variety of fowl has 
the defect of " twisted primary quill feathers much mote frequently than any other." 
It is probably because this "defect" was made a disqualifying point in poultry 
shows, that the Frizzled Cochin has not become an established variety. 
(2) The Silk Cochin or Emu Fowl is known. 
(3) Grouse and Partridge Cochins represent the spangled varieties. 
(4) "There is a tendency in Cochins to produce an extraordinary number 
of cocks in nearly every brood" (Tegetmeier). We have thus a sexual peculiarity 
in Cochins just as in cinnamon Canaries (cf. p. e. </ x d. e. % matings). 
(5) Cochins are also peculiarly subject to visual defects like albino birds. 
"The eye should be red... in all cases of blindness pearl-eyed birds" (a further 
stage of albinism) " have been the sufferers " (Tegetmeier). This pearl eye is 
said to be " very hereditary" in Cochins (Wright's Poultry Book, 1902). Davenport 
in Inheritance in Poultry, quoting McGrew (1904, p. 520), mentions the Buff 
Cochin as probably the oldest Chinese variety, and cites records of the oldest 
monastery — Hoangho — to the effect that this fowl was cultivated by the brother- 
hood 1500 years ago. 
From the same author, a very important confirmation of our theoiy is obtained. 
Referring to the indigenous Buff Cochin of China, a traveller says that " no two 
can be found of exactly the same color; some are a chestnut-color, others darker, 
and some quite light" (McGrew, 1901, p. 527). With regard to the Buff Cochins 
first imported into England, Wright agrees with Tegetmeier in saying that the 
colour varied from lightest silver buff and silver cinnamon, through lemons and 
buffs, to the deepest coloured cinnamons. 
Thus we have in the Cochin the same variability that we have seen to occur 
in our cinnatnon sports and hybrids, and we can understand how Gallus bankiva, 
through a cinnamon sport, might be the ancestor of all our present varieties 
without the aid of a separate ancestor for the Aseel-Malay group. We have, 
moreover, evidence of the sporting tendency in G. bankiva, for Darwin, quoting 
Mr Blyth, says that the species varies considerably in the wild state, some from 
near the Himalayas being paler coloured than those from other parts of India 
(Darwin, The Variation of Animals and Plants under domestication, 1876, Vol. I. 
p. 247). 
An interesting point also, in connection with this cinnamon-sport origin of all 
our domestic varieties (which sport occurs, as we have shown, from the female 
side), is the following statement by Blumenbach, 1831 (given by Tegetmeier): 
" What we have observed above concerning the aberrations of the formative 
nisus, namely, that it occurs less frequently in animals of the male sex than in 
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