205 



reduction (r.), or some dying (-{-) could be observed, g. Whether the 

 sponge had grown very weakly ( — ), rather well (-|-) or vigorously 

 (-[-+)• ''• The colour of the sponge; for which .1 shall make use of 

 the following expressions, indicating the green colour with decreasing 

 intensity: dark green > green > light-green > yellow-green > light 

 yellow-green > greenish > colourless, i. The number of the various 

 chlorophyll corpuscles present in the tissues : sub 1 that of the green 

 ones, sub 2 that of the ,, colourless ones with structure" (p. 42), 

 sub 3 that of the ,, colourless ones without structure" (,,vague shades" 

 excluded); always the number present in the whole microscopic pre- 

 paration, so in an almost equal volume of eacli sponge. As for the 

 meaning of I — XII, see pag. ^4. j. The type to which the sponge 

 proved to belong during the experiment; in type I the green colour, 

 therefore also the number of green chlorophyll corpuscles, increases; 

 in type III the green colour and the number of green corpuscles 

 decrease; in type II the green colour remains constant as well as 

 the number of green corpuscles, or the green colour or the number of 

 green corpuscles changes a little by increase or decrease; in the last case 

 but one we may speak of a type IF; in the last one of a type W^^. 



All experiments are mentioned; those belonging to one series are 

 placed together in one space. As for the discussion, see pag. 58 — 66. 



In this table has also been registered the behaviour of some colour- 

 less sponges, which had first been for some time in a suspension of 

 green chlorophyll corpuscles, which, therefore, had been purposely 

 infected with those corpuscles (see Table 7) ; viz, n" 246, 248, 254 — 256 

 etc. For the discussion of these results, see p. 28, 50. 



