110 Mr. Gulliver on the Minute Anatomy of Animals. 



picted organic germs, or objects resembling nucleated nuclei, 

 in clots of fibrine. Those drawings were made from clots 

 which were either pale and opake, or as transparent and co- 

 lourless as the serum of the blood. I have lately examined 

 the red portions often found towards the edges of such clots, 

 and observed in these coloured parts a multitude of objects 

 like the organic germs above mentioned, but tinged with the 

 colouring matter of the blood. These ruddy bodies appeared 

 to be merely blood-discs entangled in the fibrinous clot and al- 

 tered in their characters ; and hence the palegerms formerly de- 

 lineated may likewise have been blood-discs still more changed, 

 especially as the corpuscles of the blood are regarded as cells 

 by Schwann, and cell-nuclei by Valentin, while Dr. Barry, as 

 the result of his interesting observations, asks how many tis- 

 sues are there which the blood -corpuscles may not form r 



The corpuscles, of a yellowish or ruddy hue when highly 

 magnified, were contained abundantly in the coloured fibrine : 

 they were rather more irregular in shape than the free cor- 

 puscles of the same blood, and differed especially from the 

 latter in exhibiting nuclei when washed either with dilute 

 or strong acetic acid, and even occasionally without the aid 

 of any reagent. The nuclei often appeared as if flattened and 

 with a central point, and sometimes like mere granules ; they 

 were commonly grouped together in the centre of the cor- 

 puscle, frequently separated, and sometimes scattered about 

 its circumference. 



The following figure was made from a minute red part, 

 magnified 800 diameters, of a large, white and very firm clot 

 of fibrine from the heart of a woman, aged 20, who died of 

 puerperal peritonitis and acute pleurisy. 



Fig. 3. 



Fig. 3. A. A portion of the coloured fibrinewithout any addi- 

 tion . The corpuscles are contained in a mesh of most delicate 

 fibrils, such as I have formerly described in clots of fibrine 



