122 The Microscope. 



is in the center of this nodule, which is the center of a violent inflam- 

 mation, that the lymphoid cells are penetrated by the micrococci, 

 and thence transported to the lymph vessels in the vicinity. Along 

 these vessels there are formed a series of small disseminated inflam- 

 matorv' nodules; and thus the whole system becomes infected. — 

 Joiirnal American Medical Association. 



Histology and Physiology of Ciliated Epithelium.— Following 

 up the experiments which Prof. Griitzner made upon injured ciliated 

 mucosa, in which it was seen that the injury affected only the portion 

 below the cut, Herr A. Lust has studied in the living organism, the 

 exact changes exhibited by the adjacent cells. In the phaiyngeal 

 and oesophageal mucosa of living frogs, definite injuries were cleverly 

 effected by means of burning, and Griitzner's results were confirmed. 

 The ciliated areas or grooves in the normal skin, above the injury, are 

 described and contrasted with the appearance of the adjacent area 

 below. The ciliation is stopped or checked, moribund pulsations are 

 abundantly observed, the ciliated areas or grooves are less definite, 

 and the color of the affected area is turbid and slightly yellow. The 

 mucous cells exhibit marked modifications, e. g., a marked abundance 

 of disproportionately large granules, and a longer, narrower shape. 

 In the ciliated cells, the cilia disappear or become fused together, or 

 become, less fi-equently. markedly smaller, as Drasch has already 

 noted. The epithelium generally is much less conspicuous, and the 

 ciliated grooves much flatter. The investigation, which cannot yet 

 be regarded as complete, was extended to other amphibians and to 

 the rabbit. — Journal R. M. Society. 



The Circulation of the Blood in the Ganglionic Cells. — Prof. 

 Albert Adam Kiewics has made a searching examination of the blood 

 supply of the ganglia, his experiments being confined more particu- 

 larly to the intervetebral ganglia connected with the cords forming 

 the brachial plepus. The vessels supplying these ganglia were 

 injected with carmine through the spinal arteries, with the result of 

 showing that each cell is supplied with blood by means of a sepai-ate 

 erterial loop so disposed as to invest the ganglionic cell, which is 

 thus bathed in the arterial blood, much as the placental tufts are 

 bathed by the blood in maternal finuses. The cell itself, moreover, 

 is said to contain minute ramifications of passages from the 

 circumference to the center, through which semen alone can pene- 

 trate. — W. K. Medical Revieio. 



