.1 nixosirn mimmy 



PORTION OF SKIN FROM TRACHODON MUMMY 



This roptile had neither scalis nor twny covering, but a thin epidiTinis made up ol' 

 tubercles of two sizes, the larger size iiredoininating on surfaces exposed to tiie sun 



down the stream, and rapidly buried in a bed of fine river .sand intermingled 

 with sufficient elements of clay to take a perfect cast or mold of all the 

 epidermal markinji;s l)efore any of the e[)idermal tissues had time to soften 

 under the solvent action of the water. In this way tlie markin<>s were indi- 

 cated with absolute distinctness, and as the specimen will soon Ix- mounted 

 in a glass case, the visitor will be able by the u.se of a hand glass to study 

 even the finer details of the ])attern, although of course there is no trace 

 either of the epidermis itself, wliicli has eiitirel.\' di.sappeared, or of the 

 pigmentation, or coloring, if such existed. 



The discovery of this sj)ecimen discloses the fact that nitliongli attain- 

 ing a height of fifteen to sixteen feet and ;i length of thirty feet, the 

 trachodons were not coNcred with scales or a bony protecting arma- 



