ALG2E. 



^^5 



tions of the surface of the thallus consisting Z ■ , '^ >" ''°™'" '^'^'''ain por- 



siace=e they are, like the tetZores n 0^.1 ""^ ''^"" °' ''"^' '" «><= M^'^be- 

 overarching of ihe surround ng t,s ue 'xhe rounH- 7""" "'"' ^''^ f°™^'* "^ ">« 

 do not swar™, but are move/ air/pasliv:,,.;"; the ^"''^ '"^ "° ^'"^ ^"'' 



fert;!;strfi:sf o^a-rs™^^^^^^^^^^^^ f r-'') -""'•- ^- '- 



cording to Bornet and Thuret ' Thl t "f" ' '^"'""' '""''*"■'■'■''"'> ac- 



an'lp^jS-brtl'tusTowfrtT^n ;iri^^^^^^ ^5°^- "^ ^ -^" ^'^^ ^^^ --ping filament with a root-hair and 



the creeping sten,'its apicalce" si^ua e/at ^and it -r T^'l" ^ k^' ^ ' '"^"'' <™°"--°-) P'-t ; .. a root-hair of 

 row of cells being however no indie ved-/; trlhn ^P'^!f-''^'b""=hesbearmg the sexual organs; a« antheridia. the axial 

 the cystocarp ; Ja spore escaped f on, tt X-stT.^^T ^ ^' '"^^ °^ '^^ ^"^"^ ' °' "'<= ^^""^ ^"-^"^^ ^ ^^ ^"^ en^-^'°P- °f 

 H- /' P ^e-^^aped from the cystocarp; Can empty cystocarp, its envelope consisting of rows of cells. 



^0 ^^ich no longer grows, and a broader cell which splits up by longitudinal walls into 

 nve cells, one central (axial) and four peripheral. One of the latter, the one turned away 

 rrom the mother-filament, becomes coloured and filled with strongly refractive proto- 

 plasm, and then divides by septa into three cells lying one over another, and composing 



^ Bornet and Thuret (I.e.) discovered these remarkable processes 

 tnchophore had long before been accurately described by Nageli. 



The structure of the 



