901 
extend into the fluid. A microscopical investigation shows that this 
is a network of fibrin fibres, so that there is no question about a 
real jelly. 
If, however, the experiment is made with a highly concentrated 
fibrinalkalihydrosole, the fibrin likewise settles round the anode, 
often though as a jelly-like mass in whieh a microscopical investi- 
gation can detect no fibres: in this case we have to deal with a 
real jelly. If the gel is removed by means of a curved spatula from 
the fluid, it breaks up into small lumps. If these are put into 
distilled water, they sometimes take the film- and fibre-shape, whilst 
in Other cases they are further broken up. 
In a fibrinacidhydrosole of moderate concentration, made for 
instance with an HCl, the other conditions of the experiment being 
the same, a clot, which likewise encloses gasbeads, settles in the 
course of a few hours on the negative electrode. Mostly this clot 
can be carefully removed as a whole; in water it presents the 
appearance of a mass of threads, which on being examined micro- 
scopically are found to make up a network of fibrin fibres. In highly 
concentrated fibrinacidhydrosoles the fibrin secretion may assume 
the form of a jelly-like mass or of thin films; mostly, however, a 
connected film is formed also in this case, which, in water, breaks 
up into a mass of fibres. lt should be mentioned that in these ex- 
periments the fluid in the leg of the U-tube with the positive elec- 
trode remains clear; here too a few gas beads may be observed. 
If in the same manner a current is led through blood-plasm which 
has been kept fluid, the result will be after a few hours a con- 
nected jelly-like filmy clot with numerous gas beads, from whence 
slender fibres extend into the fluid at the positive electrode, whilst 
the fluid has remained clear in the other leg of the U-tube. When 
removed in water this clot mostly breaks up into thin flakes and 
fibres. On being examined microscopically the mass at tirst appears 
to be a dense amorphous granular mass. After one of the flakes or 
fibres has been unravelled a network of fibrin fibres is revealed, 
which had not been observed before on account of the numerous 
amorphous substances. These amorphous grains are undoubtedly 
other albumens, which have been precipitated with the fibrin at 
the anode. / 
As regards these experiments made with artificial fibrinalkali- 
and acidhydrosoles, it is by no means necessary to start from fibrin 
obtained by adding bloodserum to bloodplasm kept fluid or to a 
transsudate. The same results are arrived at with fibrin which has 
