94 QUARTERLY CHRONICLE. 



and the three parts — respectively cone points, cone bodies, 

 and cone tails. He says that Max Schultze and Hasse have 

 only distinguished an outer and an inner division of the cone, 

 but that Max Schultze's "lens-like body" corresponds to 

 his "cone-body." After some further remarks on the signi- 

 ficance of these parts, Dr. Steinlin alludes to the observation 

 made by Max Schultze, that the " cone-points" are striated, 

 and states that he has often seen this himself, but did not 

 regard it as a normal structure. He novr, however, compares 

 it to the structure found in the cones of the eyes of crustacca. 

 He particularly describes the case of SquUla, in which he 

 found the striated portion breaking up into series of four 

 small laminae, or plates transversely. Professor Max Schultze, 

 in his remarks upon Dr. Steinlin's paper, points out what he 

 considers the errors in that communication. He regards the 

 columnar elements of the retina as differing in this, that 

 whereas the rods have their outer division ("point" of 

 Steinlin) of a cylindrical shape, the cones have that division 

 of a conical shape. The distinction does not rest at all in 

 the presence or absence of a lens-shaped body (the third 

 division of Steinlin), but in this difference of form. The 

 rods are the fundamental organs of vision, to which the cones 

 are in certain cases superadded. As to the lamination of the 

 cone in Crustacea, Professor Schultze is very glad to be con- 

 firmed by Dr. Steinlin's observations. He has himself 

 recently published a separate work on this subject, w^hicli we 

 notice elsewhere. On other points on which Dr. Steinlin 

 propounds new views, such as the connection of the nervous 

 elements and the connective tissue, Professor Schultze simply 

 expresses his complete disagreement. 



" On the Furkinjian Fibres," by Dr. Max Lchnert. 



These fibres were discovered in 1845, by Purkinje, beneath 

 the endocardium of the sheep, ox, pig, and deer. They have 

 since been w^ritten on by Kolliker, von Hessling, Reichert, 

 Remak, Acby, and others. They appear to consist princi- 

 pally of striped muscular tissue disposed in a very remarkable 

 way with connective tissue. They are described at great 

 length in this paper, and figured in a large plate. 



" 071 the Structure of the Spinal Ganglia, ivith Remarks on 

 the Sympathetic Ganglion-cells j" by Dr. G. Schwalbe. 



This appears to be a valuable paper ; it is of considerable 

 length, and well illustrated. The author has used iodine- 

 serum largely in his observations. 



"Researches on the Tooth-pulp," by Franz Boll. — This 

 paper is by a medical student of Bonn — one of Prof. jMax 

 Schultze's pupils. The points to w''ich he has directed his 



