1. Hyaline.
2. White Fibro-cartilage.
3. Yellow Fibro-cartilage.

III. Bone and Dentine of Teeth.

20. White Fibrous Tissue. This tissue consists of bundles of very
delicate fibrils bound together by a small amount of cement substance.
Between the fibrils protoplasmic masses (connective-tissue corpuscles)
are found. These fibers may be found so interwoven as to form a sheet, as
in the periosteum of the bone, the fasciæ around muscles, and the capsules
of organs; or they may be aggregated into bundles and form rope-like
bands, as in the ligaments of joints and the tendons of muscles. On
boiling, this tissue yields gelatine. In general, where white fibrous
tissue abounds, structures are held together, and there is flexibility,
but little or no distensibility.

[Illustration: Fig. 6.--White Fibrous Tissue. (Highly magnified.)]

21. Yellow Elastic Tissue. The fibers of yellow elastic tissue
are much stronger and coarser than those of the white. They are yellowish,
tend to curl up at the ends, and are highly elastic. It is these fibers
which give elasticity to the skin and to the coats of the arteries. The
typical form of this tissue occurs in the ligaments which bind the
vertebræ together (Fig. 26), in the true vocal cords, and in certain
ligaments of the larynx. In the skin and fasciæ, the yellow elastic is
found mixed with white fibrous and areolar tissues. It does not yield
gelatine on boiling, and the cells are, if any, few.