Skin Changes. 1 13 



Male horses often have extra teeth, which so 

 far from being a boon, often afford much distress, 

 unless man comes to the rescue and extracts them. 



The tusks of the male gorilla, we are told, are 

 in size nearly double those of the female. 



The skin glands at the reproductive period par- 

 take of the general skin activity, and there are even 

 excreted fluids at that time which occur at no other 

 times. In the lobster, as we remember, a sticky 

 substance exudes from the skin of the under side 

 of the body of the female, which she uses to glue 

 the eggs in place, while other crustaceans exude a 

 fluid which serves as food for the young. In some 

 animals the perspiration undergoes a change, ac- 

 quiring a peculiar and characteristic odor. In 

 some, special glands secrete a substance possessing 

 a powerful odor, by which one sex can be notified 

 of the presence of the other. The alligator, for 

 instance, has two musk-bags under the lower jaw, 

 which, during the breeding season, give a strong 

 musky odor to the haunts of the creature. 



Certain insects at times emit a powerful odor 

 from the skin; while, strangest of all, the best 

 accredited scientists tell us that the milk of mam- 

 mals is secreted by glands which are skin develop- 

 ment'. 



There are other than skin changes evident in 

 some creatures at the reproductive period; the 

 stickleback, for instance, secretes a sticky sub- 

 stance from the kidneys, and this it uses in weav- 



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