Bacteria in Daily Life

Mrs. PERCY FRANKLAND
FELLOW OF THE ROYAL MICROSCOPICAL SOCIETY; HONORARY MEMBER OF BEDFORD COLLEGE, UNIVERSITY OF LONDON; JOINT AUTHOR OF MICRO-ORGANISMS IN WATER, THE LIFE OF PASTEUR, ETC.
Spirits, when they please,
Can either sex assume, or both; so soft
And uncompounded is their essence pure,
Not tied or manacled with joint or limb,
Nor founded on the brittle strength of bones,
Like cumbrous flesh; but, in what shape they choose,
Dilated or condensed, bright or obscure,
Can execute their aery purposes,
And works of love or enmity fulfil.
Milton.