193 



In the tables A — D is indicated: a. The n'' of each culture, h. The 

 species (sp. = Spongilla ; ep. = Ephydatia) the culture lias been taken 

 from. c. The date of the beginning. d. The nature of the culture- 

 medium (last column), e. The composition of the culture from the 

 first day till as long as it was kept; so column 1 indicates bv 

 -}-, O, or — wether in the culture the green substance (n.b. exclu- 

 sively that of the green chlorophyll corpuscles, not that of otlier algae 

 wliich might the present) is increased, i^emained the same or decrea- 

 sed; column 2 wether in the culture occurs a strong (-[-), a small ( — ) 

 or no (n) ') infection of algae (a.), bacteria (b.), diatoms (d.) or of 

 mould (m.); column 3 indicates the number of the gi'een chloropbyll 

 corpuscles present in the whole (microscopic) preparation ; column 4 

 the number of tlie green stages of division of tliose corpuscles; column 

 5 the number of the ,,colourless chlorojdiyll corpuscles witli struc- 

 ture" (p. 42); column 6 the number of the ,,colourless chlorophyll 

 corpuscles witliout structure" („vague shades" excluded) — again 

 always the number present in the whole microscopic preparation, 

 consequently, present in an almost equal volume of each culture. 

 As for the mode of stating these numbers as well as for the meaning 

 of the symbols I — XII, see pag. 13 — 15. All data concerning one 

 culture are united in one horizontal line. Next indicates: an asterisk 

 to a n" (eg. 69*) that the culture orginated in a colourless sponge, 

 a zero to a n" (eg. 84°) the culture originated in a green one; in 

 all other cases the cultures of green corpuscles were taken from green 

 sponges, that of colovu'less corpuscles from colourless ones; dr. means 

 that the cliorophyll corpuscles are degenerate, p. that they have 

 grown pale; while c. denotes that there occur centra of growth of 

 green corpuscles. 



All cultiires are mentioned. To one series belong the following 

 numbers (put together in parenthesis) — therefore these may be 

 compared directly — : (37, 43), (65, 66, 72), (68,69), (80, 81), (84— 87), 

 (91, 92), (113—120), (124—129), (141—142), (145—148), (188—198), 

 (199—204), (240—242), (.309-316), (319—321). The cultures n« 72 

 and 86 were in the inorganic solution I of pag. 10; n" 114,118,125, 

 128 in tlie inorganic solution II; n" 87, 141, 142, 146—148 in tlie 

 diluted organic solution III; n" 115, 119, 126, 129 in the concen- 

 trated organic solution II; n" 188 — 195 and 199 — 204 in the concen- 

 trated organic solution I; all mentioned on pag. 10 — 11. The feeding me- 

 dia of the other cultures are indicated in the tables (conf. pag. 10 — 11). 



As these culttu-es sliould inform us, if and undei- whicli circiini- 



1) mentioned in special cases oiily. 



13 



