420 McArten, Shedding of Stomach Lining by Birds. loon 
observable in living birds, and appears, except in the case of the 
hornbills, to be of wnusual occurrence. Observations made during 
the course of stomach examinations, however, make it certain 
that the gradual wearing down, shedding off, and grinding up of 
the lining is much more frequent. Among the birds which have 
strongly muscular gizzards, shedding of the stomach lining, proba- 
bly occurs more or less regularly and is necessary to maintain the 
efficiency of the food-triturating process. 
BIBLIOGRAPHY. 
BartTiett, A. D. 
Remarks upon the habits of the hornbills (Buceros). Proc. Zool. Soe. 
Lond., 1869, pp. 142-146. 
Food pellet regurgitated by Buceros corrugatus was enclosed by a 
stomach lining. 
[Birds ejecting the inner lining of their stomachs.] Wild Animals in 
Captivity 1899, pp. 311-318. 
Observations on Buceros corrugatus, Plotus anhinga and Phala- 
crocorax brasilianus. 
Court, H. C. 
Notes on the digestive system of Hydrocorax. Philippine Journal of 
Science, 6, No. 1, Section D., Feb., 1911, pp. 31-37, Pls. 1-2. 
Shedding of lining occurs, and indigestible parts of food are some- 
times ejected in a sac of stomach lining. Fully discusses anatomy 
of parts concerned. 
FLower, W. H. 
Note on a substance ejected from the stomach of a hornbill (Buceros 
corrugatus). Proc. Zool. Soc. Lond., 1869, p. 150. 
Confirms Bartlett’s statement that pellet was covered by a 
stomach lining. 
McAtTes, W. L. 
The shedding of the stomach lining by birds. Auk, 23, No. 3, July, 
1906, p. 346. 
Fragments of lining found among food in stomach of Himantopus 
mexicanus. 
Morin, JAMES. 
On the nature of the sacs vomited by the hornbills. Proc. Zool. Soc. 
Lond., 1874, pp. 420-425. 
Details of the structure. 
Newton, ALFRED and Gapow, Hans. 
[Shedding of Stomach lining.] Dictionary of Birds, 1896. 
Notes on this subject, under Hornbill, p. 487, and under Stomach, 
