PLATE 21.

Fig. 1. Calcareous Deposits in the Drumhead (× 4) (P.). ·

1. Head of malleus

3. Drumhead.

2. Attic.

4. Calcareous deposits.

Fig. 2. Union of the Incus with the Wall of the Tympanic Cavity. Chronic Suppurative Otitis Media (× 9) (P.).—1, Incus; 2, granulation tissue; 3, median wall of the tympanum.

Fig. 3. Medullary Carcinoma of the Auricle (Hematoxylin-Eosin) (× 66)

1. Cartilage.

2. Cancer-nests.

3. Round-cell infiltration.

(B.).

4. Infiltrated perichondrium.
5. Infiltration penetrating into
the cartilage.

Fig. 4. Lupus Vulgaris of the Auricle (Polychrome Methylene-blue)

Fig. 5. Hyperplasia of the Pharyngeal Tonsil as seen in the Mirror (B.).

1. Hyperplastic pharyngeal tonsil.

2. Vomer.

3. Soft palate.

4. Uvula.

5. Middle turbinate (above supe

rior turbinate).

6. Inferior concha.

7. Rosenmüller's fossa.

8. Tubal fold.

9. Pharyngeal opening of tube.

Fig. 6. Hyperplasia of the Pharyngeal Tonsil (Hematoxylin-Eosin) (26 ×) (B.).-1, Squamous epithelium; 2, longitudinal furrow; 3, follicles; 4, diffuse adenoid tissue.

PLATE 22.

Fig. 1. The Deposition of Fatty Tissue in the Fossula of the Fenestra Cochleæ after Chronic Suppurative Otitis Media (x 18) (P.).—1, Promontory; 2, secondary tympanic membrane; 3, fatty tissue in the fenestra of the cochlea.

Fig. 2. Obliteration of the Fossula Fenestræ Cochleæ by Fatty and Connective Tissue in a Deaf-mute (x 15) (P.).-1. Promontory; 2, fatty and connective tissue in the fossula fenestræ cochleæ; 3, secondary tympanic membrane; 4, ligamentum spirale; 5, scala tympani.

Fig. 3. Connective Tissue Occurring in the Fossula Fenestræ Cochleæ after Chronic Suppurative Otitis Media (× 26) (P.).-1, Connective tissue with cyst-like spaces.

Fig. 4. Osseous Ankylosis of the Stapes (X 14) (P.).-1, Base of the stapes; 2, anterior, 3, posterior, crura; 4, bony new formation at the posterior margin of the fenestra vestibuli, and union with the border of the base of the stapes; 5, mucous membrane.

Fig. 5. Osseous Ankylosis of the Stapes, From a Man Seventy-four Years of Age and Very Hard of Hearing (X 14) (P.).-1, Base of the stapes; 2, anterior, 3, posterior, crura; 4, osseous new formations on both borders of the margin; union with the borders of the base of the stapes (4) and with 5, the posterior limb.

Fig. 6. Osseous Ankylosis of the Stapes, From a Woman Fifty Years of Age and Very Hard of Hearing (X 14) (P.).—1, Osseous new formation near the margin and involving the base of the stapes; 2, old bone; 3, mucous membrane.