3o6 THE MICROSCOPE. 



and amplified. From three to five ramifications enter each of the 

 lobules taking their course along the capillaries — whether portal or 

 arterial was not stated. Specimens were prepared from perfectly- 

 fresh livers; frozen and cut by the microtome into very thin sections 

 vertically across the arteries and then stained with chloride of gold 

 and formic acid. 



This paper gave rise to a prolonged discussion, mainly on a 

 collateral issue, however, that namely, of the striated, or as is 

 claimed, 



NET STRUCTURE OF THE RED BLOOD CORPUSCLE. 



It gave vent to a volume of protests against the assertions of 

 Heitzman that was well-nigh unanimous; his only supporters being 

 Drs. Barrett and Holbrook — the former by no means assured of the 

 entire validity of the claim; the latter a pupil of Heitzman's, who 

 <loes not claim to have seen the alleged structure, except under the 

 teacher's direct manipulation. Another pupil, Dr. Stillson, never 

 was able to discover the same during his own experiments, any 

 more than had Messrs. Lucy,Fell,Up de Graff, Johnson, G. G. Tay- 

 lor, Nott, or Blackham, the latter gentleman's statements being 

 -especially convincing as to Heitzman's error. Dr. Mercer, of 

 course, took issue with him, ascribing the "reticulated structure" to 

 the source of error claimed to have been discovered by Abbe. Dr. 

 Deeke had seen the striae under certain (microscopically) suspicious 

 •circumstances, but was inclined to call them abnormal configurations 

 of granular matter. Dr. Bleidle recited the results of Woolrich's 

 experiments under Ludwig, at Leipzig, which tended to establish a 

 strong suspicion of the red corpuscles' organization — of what 

 character remaining, however, undetermined. Dr. Krackowzer while 

 also recalling the teachings of Ludwig, according to which there 

 was a strong a priori probability of the corpuscles' reticulated 

 structure — especially in view of the manner of the blood's aeration — 

 yet maintained that no such structure had as yet been conclusively 

 demonstrated and challenged the production of evidence that the 

 " red " was a " cell " in the sense of the " white" corpuscle. It was 

 a great time for the doctors, they had two hours all to themselves! 



The next meeting will be held in the city of Chicago, August, 

 1883. 



