Petch. — Mo char as and the Genus Haematomyccs. 415 
in water, the inner part swelled further, burst the outer wall, and issued in 
mucous-like masses. 
When Mocharas from the same sample as above was immersed in cold 
water, it swelled up and resumed its original shape more gradually. The 
colour of the outer layer remained unchanged, but the water was nevertheless 
tinged brown. After twenty-four hours, the outer layer had split and the 
inner part was emerging in white masses. Twenty- four hours later, these 
extruded masses had swollen still further and their boundaries were 
translucent. 
The reactions yielded by this substance with different reagents vary in 
some degree with its age or condition. For example, when it is two or 
three days old and has acquired a thick, outer, brown coat the behaviour 
of the internal white mass is not quite the same as that of freshly exuded 
material, which is covered merely by a thin yellow-brown skin. The 
differences, however, are in degree only. 
In water, material taken from the interior of a piece two or three days 
old swells up slightly into a translucent jelly in which the individual cells 
are visible, more or less in lines, like the ova of some aquatic animal. The 
water is coloured brown almost immediately. The external brown layer 
does not undergo any appreciable change. The same phenomena occur 
when this material is immersed in a ,5 per cent, solution of cane sugar, but 
the liquid usually is not coloured and the swelling is generally greater. 
When freshly exuded material is immersed in water, it spreads out in 
an opaque, cream-coloured, slimy layer over the bottom of the tube, the 
water being coloured brown as before. Some part of the original mass 
may retain its shape, but the bulk of it spreads out over the base of the 
tube, instead of swelling up into a definite, pulvinate, translucent mass, as 
in the case of the older material. In a day or two, the slime swells still 
more and extends up the tube, driving before it the brown liquid, but still 
leaving an opaque, creamy layer at the base. In 5 per cent, cane sugar 
solution the same happens, but the liquid in this case is tinged brown, 
though only slightly, and more of the original mass remains coherent than 
in water. 
If the freshly exuded material is fixed to the side of the tube, in water, 
the bulk of it falls to the bottom and forms a creamy layer as before, but 
some of it remains adherent to the side, and swells into translucent strands 
in which the cells are embedded. No difference has been observed in the 
reactions of these two portions, except as regards the starch grains. Those 
in the cells which sink to the bottom turn evidently blue in chor-zinc-iodide, 
but those in the cells in the strands take at first a brownish tinge, before 
becoming opaque. Treated in the same way in 5 per cent, sugar solution, 
comparatively little falls to the bottom of the tube, the bulk swelling into 
a cream-coloured mass still adherent to the side. 
