JOURNAL OF MICROSCOPICAL SCIENCE. 
DESCRIPTION OF PLATE IX, 
Illustrating Ernst Haeckel’s Monograph of Monera. 
Protomyxa aurantiaca. 
?ig. 
1. — Protomyxa aurantiaca encysted, in the stationary condition ; a homo- 
geneous orange-red ball of protoplasm, surrounded by a soft, struc- 
tureless, gelatinous covering. X 300. 
2. — The same, at the commencement of its development. The homo- 
geneous orange-red ball of protoplasm has retracted itself from the 
inside of the wall of the cyst, has become thickened, and has begun 
to divide into numerous small globular bodies ; between the plasma- 
ball and the outer covering a little clear fluid has collected. 
X 300. 
3. — The same, further developed. The plasma-ball is entirely divided into 
numerous small globular bodies of uniform size ; these, lying loosely 
together, again (ill up the entire interior of the globular cyst. 
X 300. 
4. — The small globular masses of protoplasm which have resulted from the 
breaking up of the encysted plasma-ball draw themselves out at one 
end into a long tail, and issue as “swarm-spores” with a lively 
motion from the cyst (“ sporangium ”). x 300. 
5. — Ten separate pear-shaped spores, moving briskly about with the aid of 
their tails, after their exit from the ruptured cyst ; the body as well 
as the tail of the spore is a perfectly naked and homogeneous 
sarcode mass. X 380. 
0.— Seven separate sporules, which, becoming stationary, have retracted 
their tails, and protruded instead a number of pointed, irregularly 
formed processes (pseudopods) ; they creep about with the aid of 
these with a constant but slow change of form in the manner of an 
amoeba ; the homogeneous plasma-body is still without vacuoli. 
X 380. 
7. — Three amceba-like germs (creeping sporules) unite themselves by their 
anastomosing pseudopods, and finally unite entirely into one single 
plasma-body (plasmodium) ; single vacuoli (v) are already to be 
noticed in the plasma. X 220. 
