The Making of Species 
ally improbable dogma in the presence of a great 
and consistent array of opposing facts.” 
Men of science not infrequently charge the 
clergy with adhering to dogma in face of oppos- 
ing facts; it seems to us that many of the 
apostles of science are in this respect worse 
offenders than the most orthodox of Churchmen. 
The example of the mollusca of the Sandwich 
Islands is by no means a solitary one. D. 
Dewar cited some interesting cases in a paper 
recently read before the Royal Society of Arts 
(p. 103 of vol. lvii. of the Society’s Journal) : 
“The Indian robins present even greater 
difficulties to those who profess to pin their faith 
to the all-sufficiency of natural selection. Robins 
are found in nearly all parts of India, and fall 
into two species, the brown-backed (Zhamuobia 
cambazensis) and the black-backed Indian Robin 
(Thamnobia fulicata). The former occurs only 
in Northern India, and the latter is confined to 
the southern portion of the peninsula. The hen: 
of each species is a sandy brown bird with a 
patch of brick-red feathers under the tail, so that 
we cannot tell by merely looking at a hen to 
which of the two species she belongs. The 
cock of the South Indian form is, in winter, a 
glossy black bird, with a white bar in the wing, 
and the characteristic red patch under the tail. 
The cock of the northern species, as his name 
implies, has a sandy-brown back, which contrasts 
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