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- n. Plural form of lemniscate.
Sorry, no etymologies found.
These close similarities point to some real relation between these groups of elements, which are placed, in the lemniscates, equi-distant from the central line, though one is on the swing which is going towards that line and the other is on the swing away from it.
Crookes 'lemniscates, sufficient for some amount of generalization.
Manganese is often grouped with iron, nickel, and cobalt (_see_ Crookes 'lemniscates), but its fourteen protruding bodies repeat the "lithium spike" (proto-element 5) and are grouped round a central ovoid.
These groups are at the turns of the spiral in Sir William Crookes 'lemniscates (see p. 28).
Crookes 'lemniscates, that forming the "neutral" column; it is headed by helium, which is _sui generis_.