102 



ner shown in fig. 1. The stalks will also separate from some of them, 

 as at p f p, and the whole of these parts will remain alive for two or 

 three days. This is the only opportunity for seeing their circulations. 



Figs. 29 to 34 are as seen with a power of 300, from tracings 

 carefully made, whilst the portions of globule were magnified 880 times, 

 consequently 29, the main stalk, and 30, an edge-view of one segment 

 and its stalk, p, are in exact proportion, to each other. The stalks 

 have linings, paved with minute, elongated vesicles, in the direction 

 of their circulation, which they appear to regulate, and they very 

 distinctly show the large, flexible vesicle, q, gliding round in close 

 contact, like a slug ; for as it always keeps in close contact with the 

 side, every part changes in succession, to fit the angle at the bottom 

 of the stalk, and whilst doing this its motion is impeded, so that the 

 fluid keeps passing it till it has got by, and then both move together, 

 and in like manner at top its flatter side becomes convex, and 

 its round back becomes flat whilst passing under the dome. 



The only coloured portions of the globule are in the stalks and at 

 the inner surface of the segments, r, r, on which bright pink balls, 

 perfectly round, and of extreme minuteness, are deposited. The fluid 

 in the segments is so perfectly clear that nothing of its motion can 

 be seen. 



The centre of the globule is occupied by a few clear balls, from 

 which the eight segmental stalks radiate, as in fig. 2, and from which 

 other clear vessels, s, fig. 31, project, and again from these, smaller 

 ones, t, t, project, and lastly, from these, the numerous filaments, w, m, 

 ramify in every direction to fill all the space in the globule. Fig. 

 34 shows a stalk, p, which had left its segment, but retained some of 

 the central features, s, and t, t, t: its circulation continued in 

 full activity. 



The ripe globule spontaneously opens, as in fig. 1. The filaments 

 also expand and separate into clusters : they are so numerous that I 

 have not been able to decide upon their exact number. 



The tube-like filaments, m, are divided into numerous compart- 

 ments, in which are produced the most extraordinary objects I have 

 ever observed of vegetable origin. At first they are seen agitated 

 and moving in their cells, as in fig. 32, where they are coiled up in 

 their confined spaces, every cell having one. They gradually escape 

 from their cells, by what means or through what opening I have not 

 been able to ascertain. The whole field soon appears filled with life : 

 they are generally spirals of two or three coils, and never become 

 straight, though their agitated motion alters their shape in some 



