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Profs. J. G. Adami and L. AschofF. [June 6, 



B. Pathological. — ■ 



Fatty patches of the aortic endothelium (Do.). 



Atheromatous areas in the arterial walls (Mettenheimer, Torhorst). 



Lungs : Alveolar epithelium of the new born (Hochheim), and of adults 

 (Wagner), lung tissue in general in various diseased states (Virchow, 

 Mettenheimer, etc.), bronchial epithelium (Schmidt, Kaiserling, and 

 Orgler). 



Kidney : Fatty degeneration (Albrecht, Lohlein and, in certain cases 

 only, Kaiserling and Orgler), cells of renal tubules after arterial 

 ligature (Albrecht). 



Crystalline lens in both soft and hard cataract (Mettenheimer). 



Tumours ; cells of many tumours, cancerous and sarcomatous (Kaiser- 

 ling and Orgler). 



C. Autolytic, developing post-mortem in the aseptically preserved organ. 



Lung, alveolar epithelium (Albrecht, Hochheim). 

 Kidney and liver cells (Albrecht, Waldvogel, Dietrich and 

 Hegel, etc.). 



Skeletal and heart muscle (Dietrich and Hegel). ■ 



Here may be included possibly the myelin bodies seen often in 

 morning sputum (Muller and Schmidt), developed in dissociated cells. 

 The cases of appearance of myelin bodies in the cells of necrosed areas 

 would appear to form a connecting class between B and 0. 



II. Diffused Myelin. — Myelin not recognisable in the tissues in the form 

 of discrete bodies, but gained from them by digestion with alcohol. 



Here are included myelin substances from the brain and nerve tissue 

 (Berzelius, Drummond, Virchow, Gobley, Liebreich, etc.), egg yolk 

 (Gobley, Virchow), spleen, suprarenal medulla and colloid thyroid 

 (Virchow), blood (Gobley), mesenteric chyle (Beneke), red corpuscles 

 (Albrecht), pus (Virchow). Indeed, most organs if digested with 

 absolute alcohol at 40° to 45° C. will yield lecithin-like substances 

 which become precipitated in part upon cooling to 0° C. and in various 

 fluids afford well-marked myelin forms. And, as pointed out 44 years 

 ago by Beneke, this form of myelin is widely distributed throughout the 

 animal and vegetable kingdoms. 



III. Myclin-like Substances in Secretions. — Bile of gall bladder (Virchow). 

 Contents of small intestine after fatty meal (Beneke). 



Leaving aside the second class, in which it would seem that we have to 

 deal with impure lecithin (for lecithin purified from cholesterin does not, we 



