Abstract
The auther has examined the diffusibility of inorganic salts solutions, pepton and the white of an egg through the tympanic membrane of barndoor fowl, comparing with other membranes, such as an inside membrane of the egg-shell, an Indian-rubber membrane, a paraffin paper, an urinary bladder of cow, and an inside membran of bamboo etc..
From the result of the experiments he concludes as follows:
1) Dialytic character of above membranes for solutions of inorganic salts such as natrium chloricum, magnesium chloricum and calcium chloricum, is most intensive by the bamboo-membrane and the least by the Indian-rubber. The tympanic membrane is relatively feeble in its dialized character and is almost similar to that of an urinary bladder of cow.
2) Natrium chloricum is the most easily dialized for membranes here used except tympanic membrane, then follow magnesium chloricum and calcium chloricum. Tympanic membrane, however, in its character of dialysis takes an order of natrium chloricum, calcium chloricum and magnesium chloricum.
3) In case of the peptone, inside-membrane of an egg-shell is the most intensive and then it comes in following order: Urinary bladder of cow, paraffin paper, tympanic membrane and Indian-rubber membrane.
4) In case of the white of an egg is not dialized through all the membranes even in 5 hours.
