Some sandstones and shales appear as if made up of spheroidal masses, the mineral composition of the Spheroids not differing apparently from that of the unchanged rock.
"Geology"
James Geikie
The number of these Spheroids is increased by the addition of gelatine.
"The Mechanism of Life"
Stéphane Leduc
Some are oblate Spheroids with the aperture near the top, some are purse-like and suspended, and some are regular cups.
"The Nests and Eggs of Indian Birds, Volume 1"
Allan O. Hume