Too much light is useless for observing delicately coloured or colourless preparations, whose parts only become visible as a result of slight differences of diffraction.
Constant magnetic field, and in the interspace between the poles is fixed a delicately pivoted coil of wire carried in jewelled bearings.
15 are so delicately balanced, that inquirers may change their views, and modify or reverse their opinions, on the appearance of each fresh document that is brought to light; or even upon a new consideration of existing evidence.
The chapel of St Hubert, said to contain the remains of Leonardo da Vinci, who was summoned to Amboise by Francis I., king of France, and died there in 1519, is in the late Gothic style; a delicately carved relief over the doorway represents the conversion of St Hubert.
They have a semi-opaque body with an "egg-shell" surface and are delicately tinted with colour.