Sir Everard Home on the 
40 
paler red colour than the surrounding substance, looking 
exactly like plum-pudding stone. The cells were tumid, rising 
above the surface. 
27th. No material change. 
28th. The surface of the cells had become flat, the dis- 
charge of colouring matter considerable. 
29th. The cells still flatter, and a light coloured point in 
the centre of each. 
30th. No change, the colouring matter still discharging. 
31st. The surface so slimy that the slices were very slip- 
pery ; no other change, except a number of round deep black 
spots : in some places they appeared as if filling the orifices 
of divided arteries ; in others, as if the surface of one or two 
cells was blackened 
September 1st. The black spots more numerous ; on the 
surface of the water much colouring matter, but no mucus 
separated. 
2nd. A greater extent of black surface ; more mucus. 
4th. The colouring matter nearly gone; more black along 
the surface ; mucus on both surfaces ; their cells more distinct. 
5th. Black colour more extended ; little mucus or colouring 
matter. 
6th. The slice become very putrid ; cells as distinct as at 
first ; more extension of black ; no colouring matter ; little 
mucus. 
8th. Upper surface all black ; no appearance of cells, al- 
though seen on the under surface. The black colour was 
produced by the colouring matter becoming putrid. 
12th. The whole substance one mass of branches of ves- 
sels ; every thing else dissolved. 
