FACTS AND OBSERVATIONS. 
687 
and after the quasi-exuded corpuscles appeared. In both 
instances he says the numbers were the same, and this could 
not have been if the white cells had passed outwards.— The 
Monthly Microscopical Journal. 
Ciliary Movements and their Nature. — Mr. N. E. 
Green has been for some time engaged in observations on 
Rotifera and other microscopic animals, with a view to dis- 
cover the exact character of the action of the cilia. In a paper 
on the subject, which is published by him in the Journal 
of the QueJcett Club for July, he describes his several obser- 
vations on Rotifera. Many very interesting and novel facts 
are recorded, but the nature of the ciliary movement is still 
practically left unsolved. — Ibid. 
How Motor-nerves end in Non-striated Muscular 
Tissue. — A very valuable communication stating the results 
of M. Henocque's researches has been published in the 
Archives de Physiologie (May), and may be thus abstracted : — 
1. The distribution of the nerves in smooth muscle is not 
only identical in man and other vertebrate animals in which 
it has been observed, but is essentially similar in all the 
organs containing smooth muscle. 2. Before terminating in 
the smooth muscle, the nerves form three distinct plexuses or 
networks — (a) a chief or fundamental plexus, containing 
numerous ganglia, and situated outside the smooth muscle ; 
(b) an intermediate plexus; and (<?) an intra-muscular plexus, 
situated within the fasciculi of smooth fibres. 3. The ter- 
minal fibrils are everywhere identical; they divide and sub- 
divide dichotomously, or anastomose, and terminate by a 
slight swelling or knob, or in a punctiform manner. The 
terminal swelling appears to occupy different parts of the 
smooth muscular fibre, but most frequently to be in the 
neighbourhood of the nucleus, or at the surface of the fibres, 
or, lastly, between them. The methods of investigation 
adopted byM. Henocquehave been very numerous, including 
the maceration of the preparations, obtained in as fresh a 
condition as possible, in aqueous humour, artificial serum, 
pyroligneous acid, chromic acid, chloride of gold and potas- 
sium, especially the latter, in a strength of -g-i-^th. — Ibid. 
