KLEIN ON A PINK-COLOURED SPIRILLUM. 381 
in Stilling’s elaborate work (‘ Untersuchungen ii. d. feineren 
Bau. d. Nervenprimitivfaser,’&c.,1856) will, I think, convince 
the reader that there cannot be any possibility of confounding 
these rod-like bodies with the interwoven and anastomosing 
tubules described by Stilling. He makes numerous quota- 
tions, proving that Fontana, Valentin, Ehrenberg, Kolliker, 
and many others have remarked in the coagulated medulla 
irregular masses, which with various reagents showed rods 
either single or united in a retiform manner ; but in no pub- 
lication have I been able to find anything corresponding 
to what I have described and figured as the arrangement 
of these structures. 
It may be objected that this striation is artificial and the 
result of the reagents employed. ‘To this I would reply (1) 
that the great regularity of the appearance is opposed to this ; 
(2) that Heidenhain, who was the first to employ mono- 
chromate of ammonia, discovered the very similar condition 
of the protoplasm of the epithelium of the convoluted portion 
of the renal tubules, so that if the striation be artificial in the 
one case, it must be artificial in the other case also; and (3) 
the fibrillation of the mass of the ganglion-cells seen in these 
preparations has hitherto been observed chiefly in fresh 
ganglion-cells treated with iodized serum ; so that the pre- 
servation of this, which seems to be the natural unaltered 
state of the ganglion-cell, would be a strong presumption in 
favour of the described striation also being non-artificial. 
I am still, however, investigating the matter, and publish 
this in order to direct the attention of histologists to the 
point in question, and to the advantages of this mode of 
preparing spinal ganglia. 
Nore on a PINK-cOLOURED SPiR1ILLUM (Spirillum 
rosaceum). By Dr. EK. Kurtin, F.R.S. 
On the 26th December of last year Dr. Mackellar, of the 
Fever Hospital at Stockwell, placed for ne a small quantity 
—about half a drachm—of fresh feecal matter, obtained from 
a recent case of enteric fever, in a bottle containing about 
four ounces of water. ‘The sediment, which was of a yellowish- 
white colour, contained, when examined under the micro 
scope, very numerous, bright, highly refractive, large (spheri- 
cal) Micrococci, either isolated or in dumb-bells, or forming 
smaller or larger masses of Zoogleea. 
