THE URINE. 



791 



Wool-fibers have serrated edges, corresponding to the edge 

 of the covering imbricated scales of the cuticle j the structure is 

 faintly striated. Hairs of different animals have different forms ; 

 the central medullary canal, as well as a varying amount of pig- 



FIG. 357. ACCIDENTAL OCCURRENCES IN THE SEDIMENT OF URINE. 



,V, silk fibers ; C, cottoD fibers ; L, linen fibers ; W, sheep's wool ; F, feather ; St, starch- 

 granules of rice ; Or, cork-particles ; O, oiilium, the seed of mildew ; M, mycelium of mildew ; 

 Me, micrococci ; B, bacteria ; Lt, leptothrix. Magnified 500 diameters. 



ment, may be observed. If the cuticle is removed from sheep's 

 wool, it is termed shoddy. 



