and therefore the Theory of deriving these Rings from the thickness of the Plate of Glass of which the Speculum was made, and from the Obliquity of the emerging Rays agrees with the Observation. In this Computation I have equalled the Diameters of the bright Rings made by Light of all Colours, to the Diameters of the Rings made by the bright yellow. For this yellow makes the brightest Part of the Rings of all Colours. If you desire the Diameters of the Rings made by the Light of any other unmix'd Colour,...

she found to be nothing but the tops of the trees under which she
had been wandering, when a sharp hiss made her draw back in a
hurry:  a large pigeon had flown into her face, and was beating
her violently with its wings.

  `Serpent!' screamed the Pigeon.

  `I'm NOT a serpent!' said Alice indignantly.  `Let me alone!'

  `Serpent, I say again!' repeated the Pigeon, but in a more

she found to be nothing but the tops of the trees under which she
had been wandering, when a sharp hiss made her draw back in a
hurry:  a large pigeon had flown into her face, and was beating
her violently with its wings.

  `Serpent!' screamed the Pigeon.

  `I'm NOT a serpent!' said Alice indignantly.  `Let me alone!'

  `Serpent, I say again!' repeated the Pigeon, but in a more