HUNTING DIRECTORY. 63 



on Dissection. 



crum, the muscles were dissected back on each side ; and 

 by several applications of the saw, the medulla was laid 

 bare throughout its whole length. The spinal marrow, 

 narrow at its origin, gradually increased in size as it des- 

 cended to the joints. The dura mater was very firm, thin, 

 and rather opaque. It could easily be separated from 

 the medulla, which was of a beautiful white colour, con- 

 sisting of two columns, each again divisible into several 

 others ; so that there was no appearance of disease to be 

 discovered in the spinal marrow or its membranes ; but 

 as the vertebral veins were traced up the spinal canal, 

 they became turgid and more full of blood, and when 

 they had reached the middle of the cervical vertebra they 

 were greatly distended, and must by their pressure on 

 the spinal marrow have influenced its fiuictions. 



" Having now completed the dissection of the brain 

 and spine, the thorax and abdomen became the subjects 

 of inquiry. 



" The trachea was very large, and contained a puru- 

 lent fluid ; its mucous coat was inflamed and corrugated. 

 " The lungs presented a very peculiar appearance, es- 

 pecially the left, a large portion of which was converted 

 into a substance of a yellowish brown, covered with dark 

 black spots, and divided from the remaining healthy part, 

 which was of a florid red colour, by a complete and dis- 

 tinct line of separation. 



" The discoloured lobes, on being cut into, were solid, 

 and evidently impervious to the admission of air. The 

 bronchial tubes were full of the same thick white pus 

 noticed in my former dissection, and which exuded in 

 large drops. 



