DR. BEALE, ON NERVE-FIBRES AND CELLS. 103 
Prep. 9.—Shows bundles of nerve-fibres connected with 
ganglion-cells near the origin of the aorta. From man. x 130. 
Prep. 10.—Large ganglion-cells, from each of which two 
fibres proceed, with bundles of nerve-fibres near the iliac 
artery of a frog. Some fibres are seen passing over the 
artery. x 130. 
Prep. 11.—Ihace artery, with nerves and ganglion-cells in 
its outer coat. From the frog. Some very fine nerve-fibres 
are seen ramifying in the muscular coat of the artery. 215. 
Prep. 12.—This beautiful specimen shows arteries, pigment- 
cells, nerves, and ganglia near the kidney. The different 
nerve-fibres arising from the ganglion-cells are seen to con- 
tain numerous nuclei. x 215. 
Prep. 13.—Some nerve-fibres from the pig’s snout, show- 
ing individual tubular nerve-fibres, separated from their 
neurllemma. Some fibres much finer than others. The 
medullary sheath of the nerve-fibres is clearly visible. x 40. 
Prep. 14.—Some other individual nerve-fibres from the 
same animal. The specimen most distinctly demonstrates 
the white substance, the axis cylinder, and the nuclei of the 
primitive nerve-fibres. Some of the nuclei, which at first 
seem to belong to the so-called tubular membrane, after a 
more accurate examination, are undoubtedly proved to be the 
proper nuclei of fine nerve-fibres ramifying in the sheath. 
x 130. 
Prep. 15.—A bundle of very fine nerve-fibres imbedded in 
connective tissue of frog. x 130. 
Prep. 16.—Is a section through a large nerve of pig’s 
snout, and demonstrates that nerve-trunks are made up of 
several bundles of nerve-fibres joined together by connective 
tissue; the nerve-fibres forming a bundle, and the various 
bundles also are of different sizes. The neurilemma and the 
capillary vessels for the nutrition of the nerve are distinctly 
seen in this specimen. x 40. 
Prep. 17.—Median nerve of a foetus at the sixth month. 
Capillaries injected with carmine solution. Numerous nuclei 
are seen in connection with the dark-bordered fibres, and 
many vessels also, running over and amongst the connective 
tissue of the nerve. This specimen proves that the nuclei 
and vessels are more numerous in nerve-tissue during the 
development than when the development has been completed, 
as is the case in all tissues of all animals. x 215. 
Prep. 18.—Bundles of very fine dark-bordered fibres from 
the submucous tissue of the palate of a frog. The bundles, 
after dividing and subdividing, form a network, the fibres of 
which are compound, and are themselves composed of nume- 
