1896.] MICROSCOPICAL JOURNAL. 341 



Appecar fresh arid fair, giving an appearance of liealth, 

 like a rosy cheeked maiden full of life. White corpusles 

 normal iu size. Not enlarged by internal collections of 

 foreign bodies. Amceboid movements strong or not. 

 Proportion one to three hundred of red corpuscles. 

 Consistence good. Not sticky. Color a clean white. 

 Freely moving at will. Serum clear and free at tirst 

 sight from any form. After five minutes, most delicate 

 semi-transparent fibrin filaments appear, forming a very 

 light network in the field, which offers no obstacle to the 

 passage of the corpuscles. There should be no spores or 

 vegetation in healthy serum, though they may be found 

 by very minute examination, or by letting the blood 

 stand for several days in closely stopped phials at a tem- 

 perature of from 60 to 75° Fahrenheit. This is not say- 

 ing that spores and filaments cannot be found in blood of 

 persons calling themselves healthy — for some diseases 

 exist in a latent condition, like rheumatism, syphilis, 

 cystinaemia and consumption. I have met with people 

 who, on finding vegetations iu their blood, have decided 

 not to accept the evidence because they deemed them- 

 selves healthy. Again it is diflBcult to find a perfectly 

 healthy person iu the community ; this was made public 

 during the "late unpleasantness," when drafts were 

 made for soldiers. The blood evidences must be taken in 

 connection with that of the other physical signs. The 

 morphology of healthy blood is a most rigid test, and in 

 delicacy and far reaching goes beyond any of the other 

 physical signs. 



b. Morphology of the Blood in Consumption of the 

 Lungs. After Salisbury. 



Use. In diagnosis, exceeding in value auscultation 

 and percussion, because it detects consumption of the 

 lungs before there is any lesion of them. To show the 



