126 DR. MARTIN BARRY ON FIBRE. 



Fig. 74. Flax, dividing and subdividing into filaments (" fibres"). At a, and in part 

 of |3, a membrane-like investment prevented the structure from being 

 seen (pars. 69, 62). 



Fig. 75. Similar division of flax. The same fasciculus presented the three states a, 

 ft y (par. 69). 



Fig. 76. Similar division of flax ; the states a, /3, y and 5, having been seen in the 

 same fasciculus (par. 69). 



Fig. 77- Sheep. From the spinal chord -f. Sketch of a fasciculus of nerve. At a, a 

 spiral crosses the entire fasciculus : at |8, one half of the fasciculus is 

 crossed by another spiral (par. 39). 



Fig. 78. Sketch of mould from a ripe berry (Rubus fruticosus, LINN.). It presents a 

 fasciculus of filaments, surrounded by a spiral filament (par. 67). 



Fig. 79. Tadpole, about 5'". Portion of muscle. From the tail, presenting interlaced 

 spirals (par. 45). These are more transversely curved at the upper part, 

 and the object (filament) is therefore wider here than below, where the 

 direction of the curves is more oblique. At a part still lower than the 

 figure shows, the object was as broad as at the upper part of the figure : 

 and here also there was a corresponding change in the direction of the 

 spirals (par. 51). 



Fig. 80. Sheep. From the spinal chord -f-. Sketch of spiral filaments (a), surrounding 

 filaments having a more (yet not perfectly) longitudinal direction ((8). 

 Internal to the latter, was a broad " band-like axis" (y), exceedingly de- 

 licate, and consisting of very minute filaments, such as those in fig. 8 1 . 

 (par. 36). 



Fig. 81. Sheep. From the spinal chord-f-. a. Dots, showing the curves of a spiral. 

 These curves presented great irregularity in their direction, which has 

 not been imitated in the figure. |8. Delicate " band-like axis" (corre- 

 sponding to that in fig. 80), consisting of minuter filaments. Spirals 

 seen in the latter (par. 36). 



Fig. 82. Sheep (?). From the grey substance of the cerebellum. Sketch of a fasci- 

 culus of nerve, consisting of two halves. Two spiral filaments are seen, 

 the one surrounding half of the fasciculus, and the other surrounding the 

 whole of it. The latter spiral is removed from the fasciculus at the 

 lower part (par. 39). 



Fig. 83. Sow Thistle (Sonchus oleraceus, LINN.). From the root. Sketch of two 

 interlaced spirals, invested by something like a membrane (par. 83). 



Fig. 84. Tadpole. Sketch of two interlaced spirals in muscle, forming a very large 

 filament (par. 45). Between a and (3, the filament is twisted ; present- 

 ing here, therefore, a thinner part, its edge. 



Fig. 85. Sheep. From the spinal chord -f-. Sketch of a fasciculus of nerve. The upper 



t See the note, p. 120. 



