* * 



344 



TJI£ BEGINNINGS OF IIFE. 



testified to by Signers Crivelli and Maggie 



to become more cylindrical^ so as to produce ordinary 

 Bacteria and Vlhrlones. Similar phenomena have been 



These 

 observers watched the union of vitelline granules^ and 



4 



saw them gradually fuse into bodies in all respects 

 resembling Vibrio bacillus^ which in their turn gave 

 rise to, distinct Leptothrix filaments. Changes of a like 

 nature were subsequently followed out by the same 

 observers within epithelial cells taken from the back 

 of the tongue of a diabetic patient. In this case the 

 granulations of the epithelial cells^ by their union in 

 linear series^ formed the rudiments of the future inde- 

 pendent organisms. Moreover^ Prof. Hughes Bennett 

 has for several years asserted that such changes habitually 

 take place^.and has always laid much stress upon them^ 

 since it was in part owing to the occurrence of pheno- 

 mena of this kind that he was induced to propound his 

 ^ Molecular Theory of Organization ^.^^ 



On the other hand^ we may watch all the stages by 

 which epithelial cells in an apparently healthy condition 

 become filled with the minutest granules which subse- 

 quently develop into well-formed Bacteria — just as parti- 

 cles similarly productive of Bacteria may be seen to 



If 



healthy-looking epithelium cells from the inner side of 

 the cheek are mounted and kept in a warm damp 



appear within the substance of dying Ama^bie^. 



from 



^ 'Rendiconti di Lombardo/ 1868. 



2 See vol. 1. p. 160. ' 



-See p. 2 30, fig. 58, i-m. 



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