210 



Tari.e 11. CvlUirrs of hoJoied grern cldorophyU eorpuscJes of 

 SfortgiUa in water, vu l/f/]il ar ir, darkness. Co7ïtparison of iltc rnini- 

 hcr of oildrops occvrriiifi frec in the cxiUnreH to that present in the 

 green corpuscles, with respect lo tJie m(ttiJ>er of green stages of divi- 

 sion and the nnmher of eolovrless corpvsrh's trithovl strneture pre- 

 sent in il ie ciilliire^. 



In the chief experiment fn» 290) several other cultures have been 

 rnatje of one original culture, on two diflerent moments. These new 

 cultures ai-e indicated in the tables by braces proceeding from the 

 original culture. All these cultures were frojn time to time microsco- 

 pically examined as to oildrops etc. (pag. 13—15). The observations 

 concerning a same culture are united in the table by short lines. The num- 

 bers joined to the braces and lines indicate the time (in months) 

 between the two observations; 1. means culture in light, d. culture 

 in darkness. For each observation is mentioned: sub 1 the number of 

 the green chlorophyll corpuscles, sub 2 that of the green stages of divi- 

 sion, sub 3 that of the colourless corpuscles witliout structure, sub 4 

 that of tlie green ones containing an oildrop, sub 5 that of the free 

 oildrops; always the üumber present in the whole microscopic prepara- 

 tion. As for the meaning of I— XII, see pag. 14—15; as for the 

 discussion, pag. 86 — 87. 



Table 12. The nnniher of oildrops per amoehoctjte in the tissues 

 in different stages of development (conf. Table 6) of green Spongil- 

 lidae front lig ld and in colonrless ones front darkness (may be also 

 from light); microscopically examined by means of ravel preparations 

 from newly captured living sponges (p, 12 — 15). 



For Spongilla these observations are given in 4groups(conf. Table 6), 

 viz. for the tissue of 7. branch-topsi?. branch-bases 5. different gemmule 

 stages 1 sponge-disks; for Ephydatia only for full-grown tissue (Table 6). 



In the tables is indicated: a. the month of the examination. h.The 

 number then stated : in column 1 the (average) number of oildrops 

 per amoebocyte, in col. 2 the number of the green chlorophyll corpuscles, 

 in col. 3 that of the green corpuscles containing an oildrop, in col. 4 

 tliat of the colourless ones without structure; in the last 3 cases the 

 number present in the whole microscopic preparation. On each hori- 

 zontal line the data concerning one sponge piece are given; sub 5 

 tho analyses of different pieces of a same sponge are indicated by 

 the same letters. Finally for eacli tissue group the data, concerning 

 all analyzed sponges together, are composed; this composition sim- 

 plihes of course tlie mutual comparison of the results of the different 

 groiips. As for the meaning of I — XII, see pag. 14; as for the dis- 

 cussioii, pag. 85, 87-89. 



