122 
a complete transposition taking place in a moment, those 
granules which had been the outer being carried in, and 
those which had been the inner left out. Fur ther, in the 
majority of the instances in which this experiment was tried, 
the nucleus was likewise not included by any of the sarcode 
balls, but left outside as a somewhat shrivelled or lobed pale 
greyish-bluish coloured, rather shiny, body; in other in- 
stances, however, I could not again find the nucleus, and it 
must have either been imbedded in some of the balls of sar- 
code or ejected, and got lost. ‘The action of the present re- 
agent on the mantle or coat itself, seems to be that of causing 
its expansion or inflation, as it assumed a nearly circular and 
somewhat enlarged outline ; the specimens which happened to 
be experimented upon were some in which the external hair- 
like processes were very short, yet quite distinctly marked, 
nor did the action of the re-agent cause any very great 
alteration in their aspect, and the general surface retained the 
colourless character and the dotted appearance due to the 
linear markings in the substance of the coat, or to the hair- 
like processes feels es; whilst at the periphery, just as in 
the normally empty coat, where a thicker mass of the sub- 
stance is seen rim-like, amid where, of course, we thus look 
through a greater density, the coat appears of a bluish colour. 
Upon adding a very little of the ordinary tincture of iodine, 
the coat took a straw colour, the other portions remaining as 
before. This experiment, therefore, was not without in- 
structive results. 
The action of sulphuric acid was also interesting. Brought 
to bear very slowly at first, this time upon examples showing 
no chloropbyll-granules, this reagent caused a slight inflation 
or expansion of the total rhizopod, coat and all, simultan- 
eously. One specimen, presenting two lobes, from which 
pseudopodial projections were pushed out, presently assumed 
a more orbicular outline, and the pseudopodia disappeared. 
There were examples which possessed rather long, hair-like 
external processes. At first these were not seemingly 
affected by the action of the acid, neither was the mantle or 
coat, and I had begun for a moment to query were these 
hair-like processes of a rigid and siliceous nature, but the 
results soon gave a negative reply. By degrees there took 
place a slight widening of the hair-like process, from being of 
a fine linear appearance as in the normal condition, so that I 
could attribute to them a certain amount of writlehs and, as I 
might say, two sides; these seemingly somewhat wider 
below or during their length than at the acute apices, that 
is slightly tapermg. They could not, then, be siliceous. 
