128 DR. MARTIN BARRY ON FIBRE. 



Fig. 94. Tadpole, about 5'". From the tail. Young muscle-fasciculus, presenting 

 on one side three interlacing spirals, with their contents. This object 

 very much resembles |3 of fig. 93, but is larger. The alternation of the 

 inner spirals in a large fasciculus, may be seen by gradually shortening 

 the focal distance. 



Fig. 95. Tadpole, 5^'". Superficial part of a muscle-fasciculus presenting interlaced 

 spirals (par. 42). , 



Fig. 96. Tadpole, about 6"'. Muscle-fasciculus presenting on one side five interlaced 

 spirals (par. 42). The transverse striae somewhat distorted by manipu- 

 lation. 



PLATE IX. 



Fig. 97. From mould formed on a portion of the heart. . Tube containing fila- 

 ments, apparently spirals, running in different directions, and cross- 

 ing one another. The filaments are dotted merely. It is their edges 

 which are thus represented. |8. Tube containing interwoven spiral fila- 

 ments, in outline except at one part (par, 67). 



Fig. 98. From the same mould. The figure represents two parts of a tube, contain- 

 ing filaments. In the part a, some of the filaments are very longitudinal ; 

 others more spiral, and interlacing. In the part |3, the spiral filaments (S) 

 are more transversely spiral ; they seemed to have been broken off at this 

 part, and had perhaps recoiled in consequence (par. 39). At y, are fila- 

 ments transversely spiral ; and forming a narrow mass, occupying only 

 the middle of the tube. S. Structure of the filaments. 



Fig. 99. Sheep. From the spinal chord-f-. Fasciculus of nerve. The figure represents 

 only a part of the many spiral filaments seen in this object. Between 

 some of these spiral filaments (a) were enlargements (|3). y. Structure of 

 the spiral filaments, as well of those at , as of the others. , I. Longi- 

 tudinal filaments, t. Central space, much more pellucid than the rest. 

 This central part is the place of origin of new substance. There seemed 

 to be in the interior, filaments interlacing with one another. These are 

 not represented (par. 39). 



Fig. 100. Sketch of fasciculi of flax. In a, are seen longitudinal and spiral filaments. 

 In (3, the filaments seemed to interlace (par. 68). 



Fig. 101. Sketch of a fasciculus of flax; the interior not shown. Here and there, 

 and in some degree at pretty regular distances, it was crossed by trans- 

 verse filaments running in opposite directions. At a, there were two of 

 these filaments in each direction (par. 68) ; at (3, there was only one. 

 Where these filaments (a and |3) were situated, the diameter of the fasci- 



t See the note, p. 120. 



