ORIGIN OF COLORED BLOOD-CORPUSCLES. 



101 



do not, either inside or outside of the vessels, which themselves 

 are not fully developed, exhibit the features of perfect red blood- 

 corpuscles, but show the most convincing transitions toward 

 such, we are certainly justified in saying that they are stages of 

 development of colorless protoplasm into colored corpuscles. 

 We may designate such formations as haematoblasts. 



I thus saw formations also met with by W. H. Carmalt and 

 S. Strieker * in the inflamed cornea of the frog and rabbit, and 



B 



FlG. 29. ELEMATOBLASTS IN BONE-CORPUSCLES OF A DOG'S TlBIA, PURPOSELY 

 INJURED WITH A BED-HOT IRON. EIGHTH DAY OF INFLAMMATION. [PUB- 

 LISHED IN 1872.] 



Bright homogeneous lumps, L l and L*, contain a few vacuoles, V, or numerous vacu- 

 oles, J). The shining substance borders the bone-corpuscle at M ; a fully formed red 

 blood-corpuscle at B. Magnified 800 diameters. 



could corroborate the statement of C. Rokitanskyt that in 

 " mother-cells/ 7 when they ramify in order to produce a capillary 

 system of vessels, blood originates. 



In 1873 (page 46), I claimed all the formations described to 

 be living matter at an early, juvenile stage, from which, in turn, 

 by vacuolation and reticulation, protoplasmic bodies may arise. 



* Medic. JahrMcher. Wien, 1871. 



t Handbuch der allg. patholog. Anatomie. 



Wien, 1846. 



