230 



THE MICROSCOPIST. 



FIG. 182. 



the tissues (hence the dark color of a scab), then the cor- 

 puscle disintegrates and breaks up into granules. Some- 

 times there is found an aggregation of brownish-colored 

 blood-corpuscles undergoing disintegration at the edges as 

 in Fig. ] 82. 



3. Nucleated Cells. In these the 

 protoplasm coagulates, forming a 

 solid albuminate, which becomes 

 cloudy and breaks up into gran- 

 ules. 



4. Cell membrane resists de- 

 composition in proportion as it 

 has become horny. Hence the 

 outer layers of epithelium last 

 longer than the inner ones. 



The gangrenous disintegration of 5 " Smooth MuSOldar Fibre. 



tissues, a. Aggregation of biood-cor- Minute dusty granulations first 



puscles. 6. Smooth muscular fibres. , . 



c. striated muwuiar fibres. & Break- make their appearance, which 



ing up of same into Bowman's disks. un i te go t ^ at t ] ie f^re Seems 

 1-300. After EINDFLEISCH. 



transversely striated. As decay 



goes on the muscle changes into a slimy granular substance 

 which may be drawn into threads. 



6. Striated Muscular Fibre. The muscle-juice coagu- 

 lates to a solid albuminate, giving rise to rigor mortis in 

 from twelve to fourteen hours after death, except in death 

 from charcoal or sulphuretted hydrogen vapor, lightning, 

 or from putrid fevers, or long debility. This stiffness of 

 muscle lasts about twenty-four hours. In the necrosed 

 fibres under the microscope the transverse striae and nu- 

 clei disappear amid a cloud of minute granulations, then 

 fat-globules and reddish pigment-granules show them- 

 selves, the fibres melt away from the edges and become 

 gelatinous. If gelatinous softening is marked the fibres 

 may disintegrate into Bowman's disks, or disks produced 

 by transverse cleavage (Fig. 182). 



7. Nerve-tissue. Little is known of the process of de- 



