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Robinet, on the difference of size of the male and female cocoons of the silk-moth. Rodents, uterus in the; absence of secondary sexual characters in; sexual differences in the colours of. Roe, winter changes of the. Rohfs, Dr., Caucasian features in negro; fertility of mixed races in Sahara; colours of birds in Sahara; ideas of beauty amongst the Bornuans.
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