MEMOIRS. 
Monograph of Monera. By Ernst Hackel. 
{Continued from p. 134 .) 
Probably this observation furnishes an indication of the 
reproduction of the Myxodictyum. It is conceivable that 
these M oner-colonies reproduce themselves simply by single 
individuals detaching themselves from time to time from the 
periphery of the Moner-colony. These may then form a new 
colony, either from the simple individual dividing into several 
which remain united by the anastomoses of their pseudopods, 
or by a stronger flow and accumulation of sarcode taking 
place at certain points (knots) of the sarcode net ; and by 
these peripheral plasma-lumps gradually centralising them- 
selves, and acquiring the individual shape of the central 
mother-body. Thus, the reproduction of these Myxodictya 
may take place in the simplest manner without needing to 
pass into the resting condition, and then this Moner-form 
would be intimately allied to Protogenes. 
But it is also sufficiently probable, on the other hand, that 
the detachment of the two individuals from the net under 
observation happened accidentally, and had not the signi- 
ficance of a reproductive act. Unfortunately, I could not 
further observe this remarkable Moner. For in the attempt 
to remove it from the shallow watch-glass, in which it was 
very inconvenient to examine it with a high-power magnifier, 
to a more suitable stage, unfortunately a considerable portion 
of the water containing the Myxodictyum ran over the edge, 
and so the unique specimen was lost. 
It must, therefore, be left to future observers to explore 
more completely the natural history of this wonderful 
organism. 
II. — 4. Protumosba primitiva. 
With Plate X, figs. 25 — 30. 
Those Amceba-like organisms wffiich have neither nucleus 
VOL. IX. — NEW SER. p 
