XL] 



TENDON. 



165 



glistening threads or tendons will be obtained. Prepare the 

 tendons by one of the gold chloride methods. One of the best 

 methods is the lemon-juice method of Ranvier (p. 79), but the 

 boiled formic acid and gold method also 

 yields excellent results. It is to be re- 

 membered that it is not necessary to use 

 gold chloride to demonstrate the tendon- 

 cells ; this can be done by hsematoxylin. 



With regard to the action of gold 

 chloride, my experience leads me to 

 believe, that in order to see the rows of 

 tendon-cells with their lateral protoplasm 

 expansions, the lemon-juice method is 

 very good; while the old acetic acid 

 method makes the fibres less swollen up, 

 and on teasing they are readily isolated, 

 thus enabling one to see cells either 

 singly or in rows clasping them. . Not un- 

 frequently isolated tendon-cells are to be 

 seen in the field of the microscope. 



Tease a small part of the gold tendon in Farrant's solution. 



(a.) (H) The fibres are swollen up and transparent, and lying 011 

 them are rows of tendon-cells (fig. 132, b, b) stained of a violet 

 tint. Each cell is somewhat oblong with a distinct nucleus, and 



. i3i. Fibrils of Tendon of 

 Rat Isolated by Picric Acid, 

 x 300. 





li.. i 52. Gold Chloride, 

 Tendon, Tail of Rat. a. 

 Tendon - cells seen on 

 edge and embracing a 

 fibre; bb. On the fiat, 

 the cells with a ridge. 



FIG. 133. Tendon-Cells, Tail of Rat. c. Cells ; 

 p. Lateral prolongation or expansion uf the 

 cell protoplasm ; . Nucleus ; a. Stripe or 

 ridge. 



bears a flattened wing-shaped expansion (fig. 133). Along the colls 

 is usually to be seen a stripe or ridge (fig. 133), produced by the 

 cells being compressed between several adjoining fibres. This ridge 

 may be seen to be interrupted in some of the cells. The nuclei of 

 the adjacent cells may be seen to be close together. 



