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quent occurrence, and sometimes are of large size. Thus in the 
Crowned Pigeon (Goura coronata) one of these cysts in the liver 
contained more than 3 oz. of serous fluid. Some of them were occa- 
sionally filled with concrete biliary matter after the death of the . 
hydatids. A good specimen of this was lately seen in the old Hon- 
duras Turkey (Meleagris ocellata) which died at the Gardens. Dis- 
eases of the feet, as in caged birds, are of frequent occurrence, espe- 
cially among the perchers. The toes get stiff and contracted, the 
nails are sometimes lost, and occasionally the feet are affected with a 
kind of dry gangrene. Excrescences from the abnormal production 
of cuticle are likewise very common. , 
Entozoa and Epizoa are very numerous, in diseased animals espe- 
cially: but, as I intend to bring this matter before the Society in a 
separate paper, I need only mention it here. Pediculi in birds are 
often very abundant—these parasites, like some in human shape, 
appearing to flourish best where corruption is-most rife; but in the 
viscera of birds I have often found a lower form of life, existing I 
believe long before death, viz. the presence of fungi. I have not only 
met with the sporules of mould in the tubercular lungs (as others 
have described before me), but I have seen them also upon deposits 
of lymph in the abdomen. 
REPTILES. 
Inthe Chelonians it is often difficult to ascertain the cause of death, 
many of them apparently being a long time dying, and frequently 
death not being detected until some days after dissolution ; so that I 
have not been able to arrive at any satisfactory evidence as to the 
morbid changes. In a few instances I have seen small tubercles of 
the liver. 
Saurians.—The same remark respecting the morbid changes will 
apply to Loricata ; in these, however, I have found more satis- 
factory evidence of disease, the tubercular being the most frequent 
lesion. As I stated some time since at the Society, in ten Alligators 
and Crocodiles that I examined, the stomachs of all contained stones 
and pieces of wood, and in two others since inspected I have found 
the same substances. 
In some of the Lizards I have seen the intestines obstructed with 
hard feculent matter. In a large Iguana the intestinal tube was 
blocked up with grape-stones. The death of one of the Lizards 
(Uromastiz spinipes) arose partly from bleeding from the lungs. The 
reptile in question, the lungs and liver of which were studded with 
tubercles, was put into a warm bath—rather a strange mode of 
treatment for a cold-blooded animal—and hzemorrhage was the result. 
Let me make one observation about the temperature of the Reptile- 
house. None of the reptiles here are cold-blooded, their bodies being 
of a like temperature with that of the surrounding atmosphere ; and _ 
the same remark will apply to those living in hot climates. The 
time some reptiles will go without food, and without any apparent 
diminution of bulk, is also a circumstance worthy of note. I dis- 
sected a Python (Python molurus) that had not fed for ten months ; 
