JOURNAL OF MICROSCOPICAL SCIENCE. 



EXPLANATION OF PLATE XXI, 



Illustrating Mrs. Ernest Hart^s ' Note on the Formation 

 of Fibrine.' 



Fig. 1. — Red blood-corpuscles, isolated and fixed with osmic acid vapour, 

 and stained with nitrate of rosanilin in absolute alcohol. The darkest- 

 stained corpuscles are red corpuscles in their normal condition; those 

 which are of a pale pink tint are the invisible corpuscles of Norris. 

 Human blood. 



Fig. 2. — Red blood-corpuscles, treated in the same way. a, normal red 

 corpuscle ; B, pale corpuscle ; c, transparent corpuscles, beginning to send 

 out processes. Human blood. 



Fig. 3. — Pale and transparent corpuscles, sending out ramifications. 



A, A, A, the branches are proceeding from one point of the corpuscle only ; 



B, B, corpuscles generally breaking down, and sending out branches in 

 different directions. Human blood. 



Fig. 4. — Group of transparent corpuscles, sending out bifurcating 

 branches. Rabbit's blood. 



Fig. 5. — Preparation of rabbit's blood, treated by "isolation," in which 

 groups of transparent corpuscles are seen sending out tails, which in 

 many instances are seen to bifurcate in opposite directions. A, A, normal 

 red corpuscles ; b, b, b, transparent tailed corpuscles, those at the lower 

 edge of the drawing are observed to be sending out branches from both 

 ends of the corpuscle. 



Fig. 6. — Network of fibrine, entangling and distorting red corpuscles in 

 its meshes, a, a, red corpuscles ; b, multinucleated white corpuscle ; 

 c, pale corpuscle ; d, granules ; e, fibrils of fibrine. Human blood. 



Fig. 7. — A band of threads of fibrine. a, a, normal red corpuscles ; 

 B, groups of granules ; c, c, red corpuscles, divided by the band of fibrine. 

 Human blood. 



Fig. 8. — Preparation of human blood, showing the part the transparent 

 corpuscles take in the formation of fibrine. a, a, normal red corpuscles ; 

 B, B, transparent corpuscles, from which threads of fibrine are seen to 

 proceed; c, haemotoblast of Hayem. 



Fig. 9. — Preparation showing crescentic corpuscles, and corpuscles in 

 the act of discharging their contents, a, normal red corpuscle ; b, pale 

 corpuscles ; c, crescentic corpuscles ; D, crescentic corpuscle with its 

 circular rim complete ; E, E, corpuscles discharging their contents. 



Fig, 10. — Preparation showing the various changes of the red blood- 

 corpuscles. A, normal red corpuscle ; b, pale corpuscles ; c, transparent 

 corpuscles, three of which are seen to be sending out bifurcating branches ; 

 D, beemotoblasts of Hayem. 



