195 



Tablk 5. The iransition of ifiolated green cliloropjiyll corpusclcs of Uu; 

 Spongillidae info llic sticcessive eolourless stages^ brought about under 

 various ciirumstaiu'f's eithei' iii ciiltiii-ps (conf. Tal)le 4) ()i"'in vaseline pre- 

 parations (pag. l^, J), and studied )\y stating the ininiber of the various 

 chlorophyll corpuscles present in a microscopie preparation (pag. 13-14). 



In the table is' indicated: a. The n" of each culture orof each [irepa- 

 ration. h. The species (s. = Spongilla; e. = P^plivdatia) froni \vhich 

 the corpuscles were taken. r. The date of the examination. (L AVethcr 

 the corpuscles were kept in light (1.) or in darkness (d.). e. The nuin- 

 ber of the various corjjuscles stated : sub 1 tliat of the green ones, 

 sub 2 that of the ,, eolourless ones with clearly rnarked out structure" 

 (p. 42), sub 3 that of the ,, eolourless ones with shade of structure", 

 sub 4 that of tlie ,, eolourless ones without structure", and sub 5 that 

 of the ,,vague shades of eolourless ones" without structure. In the last 

 column is nientioned,'wether these data concern a culture or a vase- 

 line preparation and under what special circumstances it was. As for 

 the meaning of I — XII, see pag. 14; and for the discussion, see pag. 

 43, II ; p. indicates that tlie green corpuscles have grown pale. 



