1 70 Mr. Bauer's experiments on the colouring matter 
lcjth of January, the weather suddenly changed, and the snow 
in the glasses entirely dissolved ; but the following night 
it froze again very hard, and two out of the three glasses 
burst and fell to pieces ; the following morning, the 20th of 
January, it suddenly thawed again ; and before I discovered 
the accident that had happened, a great part of the snow 
in the glasses was dissolved, and consequently the greatest 
part of the fungi they contained was lost ; however, I col- 
lected all the sediment left in the unmelted snow and ice 
of the broken glasses, and put it into that which remained 
entire ; after the whole was melted, the sediment which then 
was produced, certainly appeared considerably increased ; 
but the original glass which had been marked with a dia- 
mond being destroyed, I could not form a correct estimate ; 
judging however from the previous appearances, I have every 
reason to believe, that if the accident had not happened, the 
result of this experiment would have been equally satisfac- 
tory as that of the experiment on the small scale. 
On the 22d of January I again filled the glass, containing 
the remains of the sediments of all the three glasses, with 
fresh snow, and exposed it in the open air as before ; but 
the next day the general thaw began, and after that day we 
had no more frost nor snow ; I left the glass in the open 
air till the end of the month, when I examined its contents 
again, and found no particular change in the substance; but 
within the glass, which was not quite full, round the surface 
of the water 1 observed a kind of crust, consisting of a light 
yellowish green substance, which on examination in the field 
of the microscope, proved to consist entirely of the same 
sized and shaped globules as the original red fungi. J imme- 
