68 THE CONNECTIVE TISSUES, BY A. ROLLETT. 



and given a description of the spiral trabeculse found in the 

 skin of the ox. Kolliker,* however, still describes these spiral 

 fibres running around the bundles of the pia mater of the foetus 

 and recently born animals as a nucleated cell reticulum. 



A very delicate investing reticulum developed from nucleated 

 cells (perivascular plexus) has recently been described by 

 Iwanofff in the vessels of the vitreous humour in the frog. He 

 has also pointed out the distinctions which exist between the 

 trabeculse of the reticulum and the processes of the vessels. 



d. A coarser connective tissue network, with large meshes, 

 composed of broad and stiff trabeculae, forming a firm homo- 

 geneous mass, occurs in the Ligamentum pectinatum iridis of 



Fig. 1. 



Fig. 1 . T. abeculte from the Ligamentum pectinatum iridis of man. 



man. These trabeculse exhibit an indistinct, interrupted, and 

 not very regular longitudinal striation (fig. 1). Max Schultze 

 has well compared them with the anastomosing fibrous cords 

 of the gelatinous substance composing the Medusae .j The 

 statement made by Haase, that the Ligamentum pectinatum 

 of man really consists of the fibrillar form of connective tissue, 

 is erroneous. 



* Zeitschrift fur wissenschaftliche Zooloyie, Band ix., p. 146 ; una 

 Gewelelehre. Leipzig, 1867, p. 79, fig. 36. 



t CentralUattfiir die Medicinische Wissenschaften, 1868, No. 9. 

 | Miiller's Archiv, 1856, p. 319, fig. 7. 

 Archiv filr Ophthalmologie, Band xiv., p. 48, et seq. 



