Assertion: protoplasm's part | /r/HasProperty | withdrawn
Facets:
Source sentences:
text: Haeckel has found, inhabiting the fresh waters in the neighborhood of Jena, minute lumps of protoplasm which, when placed under the microscope, were seen to have no constant shape, their outline being in a state of perpetual change, caused by the protrusion from various parts of their surface of broad lobes and thick, finger-like projections, which, after remaining visible for a time, would be withdrawn, to make their appearance again on some other part of the surface.