2 6 Sir E. Home on the difference of structure, &c. 
The effect of the high notes of the piano-forte upon the 
great lioil in Exeter ’Change, only called his attention, which 
was very great. He remained silent and motionless ; but no 
sooner were the flat notes sounded, than he sprung up, en- 
deavoured to break loose, lashed his tail, and appeared to be 
enraged and furious, so much so as to alarm the female spec- 
tators. This was accompanied with the deepest yells, which 
ceased with the music. 
EXPLANATION OF THE PLATES. 
Plate III. The membrana tympani. 
Fig. 1. Human Membrana tympani ; natural size. 
Fig. 2. Ditto magnified. 
Fig. 3. Ditto in the elephant ; natural size. 
Plate IV. Membrana tympani in situ ; and mastoid cells, 
of the elephant. 
Plate V. The membrana tympani. 
Fig. i . In neat cattle ; natural size. 
Fig. 2. Ditto magnified. 
Fig. 3. In the deer ; natural size. 
Fig. 4. Ditto magnified. 
Fig. 5. In the hare ; natural size. 
Fig. 6 . Ditto magnified. 
