QUARTERLY CHRONICLE OF MICROSCOPICAL 
SCIENCE. 
Histology. Nerve. — Researches on the Intimate Struc- 
ture of the Brain. Second series. By Lockhart Clarke. 
7 plates. Philosoph. Trans. Roy. Soc., 1st part, 1868. 
Studies on the Structure of the Cortical Substance of 
the Human Brain, Part II. By Rudolf Arndt. 2 plates, 
15 pages. Max Schultze’s Archiv, 1868, 4th part. 
Changes in the Nervous System -which follow the 
Amputation of Limbs. By Dr. Dickenson. Journal of 
Anatomy, No. Ill, p. 88, pi. iv. 
Nerve-corpuscles of the Penis and Clitoris in Mamma- 
lia and Birds. By W. Bense. Henle u. Pfeufer’s Zeitsch., 
xxiii, p. 1. 
End-apparatus of certain Nerves. By Ludwig Letzerich. 
1 plate. Virchow's Archiv, part 4, 1868. 1 plate. 
Mode of Termination of Nerves in the Testicle. By 
L. Letzerich. Virchow's Archiv, March, 1868. — The au- 
thor states that the nerve-fibres pierce the membrana 
propria of the tubuli seminiferi, and end in a more or less 
irregular pyramidal mass of protoplasm, in which lie clear 
elliptic nuclei. The ends of the fibres lie, therefore, in close 
relation to the outer layer of secreting cells . — Journal of 
Anatomy, November, 1868. 
Structure of Nerve-fibres. By Dr. Grandly. Bull, de 
V Acad. Roy. de Belgique, xxv, p. 304. — From obsenations 
made into the structure of nerve-fibres immersed when 
perfectly fresh into solution of nitrate of silver, Dr. Grandry 
concludes that the axial cylinder is composed of two sub- 
stances of different physical and chemical properties, which 
present a regular disposition. It probably consists of trans- 
