PLATE 3 



Camera lucida drawings of the stained prepaiationa 



EXPLANATION OF FIGURES 



5 Nefve endings drawn from nerves pictured in fig. 4. X725. 



6 Nerve ending in a fibrin network near a large mesenchyme giant cell. Five- 

 day culture. Stained in Held's molybdic acid haematoxylin. X725. 



7 Anastomosing nerves which have grown on the surface of the clot. Five- 

 day culture. Stained in Held's molybdic haematoxylin. X525. 



