116 LIGAMENTUM NUCH^J OF THE GIEAFFE. 



origin of the finest fibres of yellow elastic tissue from 

 oval masses of bioplasm, there will not remain the 

 slightest doubt in the mind of any one who has 

 examined properly prepared specimens of this tissue 

 at an early period of its development. Other forms 

 of yellow elastic tissue from the ligamenta subflava, 

 vocal cords, coats of arteries and veins, and from 

 other parts, also contain masses of bioplasm, which 

 may be demonstrated in the manner I have re- 

 ferred to. 



167. L-igamentum nuchae of the giraffe. The fibres 

 of the ligamentum nucha3 of the giraffe are very 

 large, and remarkable for exhibiting at short in- 

 tervals transverse markings, which were first noticed 

 by Professor Quekett. These markings are situated 

 in the internal part of the fibre, and do not usually 

 extend quite to its outer surface. They probably 

 depend on contraction of the oldest part of the formed 

 material taking place as it gets dry and condensed 

 after its formation is completed. Unfortunately, I 

 have not had an opportunity of obtaining a portion of 

 fresh ligamentum. nuchas of a giraffe, so that my 

 specimens are defective in not exhibiting the bioplasm 

 of this particular form of yellow elastic tissue. 



LIST OF MICROSCOPICAL SPECIMENS ILLUSTRATING 

 LECTURE VI. 



No. of diameters 

 No. magnified. 



37. Simplest form of connective tissue ; lamb, at a very 



early period of development, snowing bioplasm 

 and tissue . . . . . . . . . . . . 215 



38. Simplest form of connective tissue ; human subject, 



at a very early period of development, showing 

 bioplasm and tissue . . . . . . . . 215 



39. Tendon at birth, showing rows of oval masses of bio- 



plasm very near to one another . . . . . . 215 



40. Tendon; old man, age 74, showing rows of oval 



masses of bioplasm, separated from one another 



by much tissue . . . . . . . . . . 215 



41. Tendon; kitten at birth, and adult cat .. .. 215 



