ON THE BLOOD-LIKE PHENOMENA. 
109 
to evaporate, leaving nothing but slime upon the mud. The main 
design of our journey, and the rapidity with which we travelled, pre¬ 
vented me from making microscopic observations on the spot itself, 
but I collected the red mass partly on white paper, drying it quickly 
in the sun, and partly in glass bottles; and to make certain of pre¬ 
serving some of it fresh, I took with me some of the mud of the fen 
coloured with this matter, hoping on the one hand, that the mud 
would for a long time preserve the moisture, and, on the other 
hand, that the small and very probably organic particles of colouring, 
would remain in it undisturbed, and not be destroyed by the jolting 
motion of the waggon. 
In Schlangenberg, where we stopped longer, on the following day, 
25th July (6tli August O. S.), and on the 27th July (8th August, 
O. S.), I had sufficient leisure to examine the substance repeatedly 
with the microscope, and to make a drawing of it. The corpusula in 
the mud only were preserved alive, and the microscope immediately 
shewed that the colouring particles were infusoria, nearly related to the 
proteal forms of the Cercaria viridis of Muller, which I have placed 
in a new genus Euglena, but they were not, like these, supplied with 
eyes, for which reason I have assigned them a new generic name, 
Astasia, from the changeableness of their form. Bory de St. Vincent 
has indeed formed a genus Raphanella, in which he has included 
similar forms, and likewise the Cercaria viridis; but I omit this 
name, first bestowed by him from the form of the animal, which is 
Muller’s Proteus tenax. The remaining forms, which are quite 
differently organized, belong to other genera, and partly to other 
classes. I shall give a coloured drawing of this beautiful animalcule, 
done from life upon the spot, in the notices which I intend publish¬ 
ing of that journey, but I shall here be satisfied to make myself 
intelligible by a short characteristic of it. 
Astasia, Phytozoa rotatoria. Monotrocha? Char. Gen. Corpus 
varium caudatum aut postice acuminatum, ore antico, ciliis non dis- 
tincds, oculo nullo. 
It is very probable that this animalcule, which I call Astasia 
lisematodes, is one and the same with the Volvox lacustris of Girod 
Chantran, but which seems to be still less changeable in its forms, 
thence in the mean time be retained as Astasia lacustris. A third 
form is probably the Astasia sanguinea, the Enchelys sanguinea of 
Nees and Goldfuss. The structure of this animal has a close affinity 
to the genus Euglena, (Cercaria viridis) that is furnished with an 
eye, which explains the circumstance why no propagation by division 
has been observed among them, as is the case in the character of the 
