THE DISEASES OP PHEASANTS. 



83 



standing that it had parted with, a drop or two of blood, it soon recovered its legs, 

 and ran about the table as vigorously as ever. Moreover, as if this were not 

 enough to satisfy me as to its almost instantaneous cure, in a very few minutes 

 afterwards it demolished the contents of a saucer partly filled with bread previously 

 steeped in nulk. An occasional gape was caused by an accumulation of frothy 

 mucus within the injured trachea; but this obstruction the bird soon got rid of 

 by a few shakes of the head, attended with sneezing. The only subsequent incon- 

 venience to the bird arose from emphysematous distension of the cellular tissue of 

 the head and neck. This was on two or three occasions relieved by a slight 

 puncture of the extremely thin integument, the emphysema ceasing to form after 

 the external wound had healed. This chicken was weU fed, and rapidly attained 

 the size of an ordinary full-grown pullet. I have since caused it to be 

 kiUed; and on dissecting the neck, although there was no scar externally, a 

 distinct cicatrix indicates the site of the operation on the trachea — the divided 

 cartilaginous rings, six in number, being united only by a thin layer of connective 

 tissue. 



EXPLANATION OF WOODCUT. 



Fig. 1. 5cJerosioma si/raff£M»Mts, male and female. Natural 

 size. 



Fig. 2. Upper part of the same, showing more especially 

 the sis-lobed circular lip of the female, and the mode of 

 nnion. Enlarged. 



Fig. 3. Lower end of the body of the female, with its 

 muoronate caudal appendage. Enlarged. 



Fig. 4. Lower end of the body of the male, showing tho 

 oup-shaped bursa, hard rays, lateral muscles, digestive 

 tube, and round tail. Magnified 30 diameters. 



Fig. 5. Mature egg. Magnified 220 diameters. 



Fig. 6. Egg, with contained embryo. Magnified 220 

 diameters. 



" Eeverting now to the worms extracted from the trachea, I observe, in the 

 first place, that the females have an average length of fths of an inch, the males 

 scarcely exceeding |th of an inch. In both sexes the bodies are tolerably uniform 



M 2 



