The alligator and its allies . short diameter of theeggs from the same nest was mm. It will be seen from the above that the averagevariation in the long diameter of eggs from thesame nest is between one sixth and one seventh ofthe long diameter of the average egg; while theaverage variation in the short diameter of the eggsfrom the same nest is less than one eighth of theshort diameter of the average egg. S. F. Clarke gives the limits of the long diameteras 50 mm. and 90 mm., and the maximum andminimum short diameters as 45 mm. and 28 such extremes in size were noticed among theeig
The alligator and its allies . short diameter of theeggs from the same nest was mm. It will be seen from the above that the averagevariation in the long diameter of eggs from thesame nest is between one sixth and one seventh ofthe long diameter of the average egg; while theaverage variation in the short diameter of the eggsfrom the same nest is less than one eighth of theshort diameter of the average egg. S. F. Clarke gives the limits of the long diameteras 50 mm. and 90 mm., and the maximum andminimum short diameters as 45 mm. and 28 such extremes in size were noticed among theeight hundred or more eggs that were examined. Economic Importance.^ More than one hundredyears ago attempts were made to utilize the skinof the alligator, but it was not until about 1855that these attempts were successful and alligatorleather became somewhat fashionable and some Journal of Morphology, vol. v. The following figures are from an article by C. H. Stevenson in theReport of the Bureau of Fisheries, 1902, pp. Fig. 9. Ax Alligators Nest, Somewhat Smaller than the OneRepresented in Fig. 8, Built Chiefly of Flags. The nest has been opened to show the irregularly arranged mass of eggs size and shape of the egg are shown by the one in the guides hand. (Froma Photograph by the Author.) The Biology of the Crocodilia 27 thousands of hides were converted into demand was short-lived, however, and wasnot again felt until the demand for shoe-leatherduring the war between the States revived thebusiness. At the close of the war the businessagain failed, but about 1869 the demand becamegreater than ever and has continued unabated tothe present time. The supply of skins from ourown States proving inadequate, large numbers ofskins were soon imported from Mexico and CentralAmerica. The skins from South America are soheavy that they are of little value in making the States of the Union, Florida has been thechief producer, the most important cent
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