468 
DK. HEEBEET WATNEY ON THE MINUTE 
deemed it to be a cuticular formation which was probably connected to the membrana 
propria. 
Schwalbe (72) noticed the tissue in Brunner’s glands ; he spoke of it as secretion- 
capillaries with a coagulation of their contents. 
Similarly Gianuzzi and Falaschi (73) described interepithelial secretion-capillaries in 
the mammary gland. 
This tissue was seen in the “ rete Malpighii ” of the skin as small branched bodies, 
staining deeply with gold: these bodies are probably connected with nerves: Chrschtscho- 
nowitsch (74), Podcopaew (75), and Elin (76). This connexion was not made out by 
Langerhans (77), Eberth (78), and Eimer (79). 
This tissue was described in the intestine by Fees (53), Erdmann (34), and Zawa- 
rykin (56). Fles and Erdmann considered it to be cement substance, and probably 
connected with the connective-tissue reticulum of the villus ; while Zawarykin spoke of 
it as the borders of the epithelial cells ; Erdmann and Zawarykin noticed that absorp- 
tion took place by this tissue. 
Possibly this tissue was seen in the serous membranes by CEdmansson (80) and 
Dybkovski (81), who described openings between the endothelium of the serous membranes. 
This tissue was described and figured by Klein (82) in the serous membranes, as 
pseudostomatous tissue. Klein considered this tissue to be of the greatest importance 
in absorption. 
Probably it is this tissue which was seen in the lymphatic vessels, and described as 
stomata by His (51) and Recklinghausen (83), and as stigmata by Arnold (84). 
The same tissue was seen in the epithelium of the alveoli of the lung, and in the 
epithelium of the bronchi, by Sikorsky (85), Klein (86), Wittich (87), and Kuttner 
(88). Klein has figured it as intraepithelial nucleated branched cells in connexion 
with the connective-tissue corpuscles of the mucosa, the latter being in anatomical 
continuity with the lymphatic vessels. 
Finally, it has been seen and described as cement-substance by Arnold (89) in epithe- 
lium of the tongue and palate of the frog. 
Injections have been forced into it from the blood-vessels by Carter (90) in many 
places, as in the palate of the frog and in the reticulum of the lymph-follicles of the 
intestine, in the epithelia of the skin and mucous membranes, and between the involuntary 
muscle-fibres of the arteries. By Arnold (89) also injections have been forced into it 
in many places; and by Thoma (91) a precipitation was obtained in it (in the living 
animal) by a natural injection. 
Injections have also been forced into it from the lymphatics, by Kowalewsky (92) in 
the lymphatic glands, by Dybkovski (81) in the pleura, and by Basch (54) in the tissue 
of the villus. 
This tissue has been found to absorb coloured fluid in recently killed animals, 
Wittich (87), and in living animals, Zawarykin (56), Sikorsky (85), and Kuttner (88). 
Zawarykin and Kuttner, in making experiments on the absorption of coloured fluids, 
