Who kindly answered to his knock, such a sadful sight to see […]

The glass clouds when you breathe on it.

[…] that in the higher apes, Troglodytes, Pithecus, the posterior cavity of the tricornate ventricle becomes of larger dimensions than in Cercopithecus, although far inferior in size and diverse in shape, from the much deeper, and more incurved cornuate bay which forms the digital cavity of man.

For rescue or personnel-transfer purposes, the midsphere could also, like DSRV, be equipped with a transfer bell.