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became Axolotls, and one an Amblystom. Then an 

 Amblystom laid eggs, and they were treated like the 

 others, and many more Axolotls were produced than Ambly- 

 stoms One of the Amblystoms thus produced laid eggs 

 which hatched into tadpoles, which presented all the 

 characteristics of Axolotls, but the colour of the marking 

 was different." 



