1349 
the sugar-percentage of chamber-liquid corresponds to the free plasma- 
sugar and follows its fluctuations. 
When we look at Table II it becomes still more probable that 
we have a case of “colloidal sugar” remaining behind. In Table II 
we have examined not only plasm and primary chamber-liquid, but 
also the so called ‘secondary chamber-liquid” which rapidly (in a 
few minutes) after the punction regenerates. As is known, it has 
more direct connection with the composition of the blood; it contains 
e.g. more protein: WesseLY *) gives one to two percent; we found 
(like Harn) *) much higher values, (on account of refraction-figures), 
namely from 3 to 5°/,. The secondary liquid therefore, as regards 
albumen-percentage, approaches blood-plasm and the more so, as the 
primary liquid had been taken away more completely. Now it 
appeared that this secondary liquid (coagulating rapidly in the case 
of the rabbit), also ‘qua’ sugar-percentage, must be regarded as a 
kind of rapidly entering blood plasm, consequently blood of which 
only the cellular elements are kept back. For the sugar-percentage 
of this regenerating liquid corresponds strikingly with that of blood 
plasm, investigated at the same time. 
In considering table II we must bear in mind that through 
“psychic” stimuli (sympathicus-stimulation) during the experiment, 
the sugar-percentage in the blood of the rabbit mostly increases. 
As between 1 and 3 (see table II) generally 20 or 30 minutes 
elapse, the sugar-percentage of 3 (as appears from the table) can 
no longer be compared with the bloodplasm of 20 minutes before, 
but with that of 4. Then there appears to be nearly complete 
correspondence between bloodplasm and secondary chamber-liquid : 
the secondary chamber-liquid therefore has obtained the “combined 
sugar’ together with the plasma-colloids. 
To get a further insight into the manner and the rapidity with 
which fluctuations in the sugar-percentage of bloodplasm are followed 
by the aqueus humour, we have, in the case of a number of rabbits, 
traced the sugar percentage of the chamber-liquid at different times 
during severe hyperglycaemia, caused by subconjunctival injection 
of 0.75 ee. of a 1°/,, adrenalin-solution in both eyes. We shall 
here mention a few brief results of a long series of experiments. 
The sugar-percentage of the bloodplasm rises rapidly after the 
injection, after 45 minutes already it reaches 0.6 to 0.7°/, and 
- remains thus for one to two hours; then it decreases again rather 
1) Ergebnisse d. Physiologie 4!, p. 565, 1905. 
2) Klin. Monatsbl. f. Augenheilkunde 64, p. 187, 1920. 
