Minute Anatomy of Animals. — No. IV. 

 Fig. 3. Fig. 4. 



243 



Fig. 3. Structure of the friable false membrane lining a 

 vomica of the same lung. In the upper part of the figure the 

 corpuscles are connected by a clot which is pervaded by granu- 

 lar matter. Lower down are several free corpuscles, a few of 

 which are perhaps altered epithelial cells, together with smaller 

 objects, some of which may be free nuclei or nucleoli. At 

 the bottom of the figure the effect of acetic acid on the cor- 

 puscles is shown ; it did not produce any ropiness or preci- 

 pitate in the matter. The pulpy matter contained in the 

 same vomica was composed of corpuscles like those in the 

 figure, but with a larger proportion of granular matter. 



Case 2. — A man, aged 41, had an old dropsy of the belly, of 

 which he died five days after tapping. The intestines were 

 connected together by coagulated lymph, which in some 

 places extended in the form of a thin whitish and semitrans- 

 parent membrane from one convolution of the large intestine 

 to another, being in parts very thin and pellucid, and thicker, 

 more opake, and white at intervals. 



Fig. 4. Structure of the false membrane last mentioned. 

 A, corpuscles and very minute molecules in a network of de- 

 licate fibrils at the edge of a fragment of the exudation. B 

 and C, from a transparent pellicle-like part ; at B the fibrils 

 present a parallel arrangement, and some of them appear 

 granulated ; but they are commonly smooth, semitransparent, 

 and apparently cylindrical. C, some isolated molecules of 

 extreme delicacy and minuteness; they were rather fainter 

 than here shown. D D, from thicker parts of the exudation 

 in which no distinct structure is apparent. All the objects 

 represented in this figure were occasionally seen in different 

 parts of the same fragment of the false membrane, and some- 

 times even in one field of vision. Compare the fibrils and 

 corpuscles with those which I have formerly depicted in a 



R 2 



