228 EXPLANATION OF THE PLATES.
PLATE IV.
Fig. 1. Dorsal muscles of a foetal pig three and a half inches long.
2. The fibre c from the previous figure, after the application of acetic acid.
3. From the brachial muscles of a fetal pig seven inches long.
4. Primitive muscular fasciculus from the cockchafer.
5. Muscular fasciculus from a pike.
6. A portion of the ischiatic nerve of a foetal pig measuring four inches.
7. Fasciculus of nervous fibres from the brachial plexus of a foetal pig four inches in length.
8. Single nervous fibres: a, from the nervus trigeminus of a foetal pig measuring six inches and a half; b, c, d, from the nervus ischiadicus of the same.
9. Nervous fibre from the vagus of a calf.
10. Ganglion-globules from the lowest ganglia of the sympathetic of a frog.
11. Capillary vessels in the tail of the tadpole.
12. Ideal representation of the formation of the capillary vessels in the area pellucida of a hen’s egg.
