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For by supposing just the same construction, but the point A infinitely distant, giving parallel rays, our oval becomes a true Ellipse, the construction of which differs in no way from that of the oval, except that FC, which previously was an arc of a circle, is here a straight line, perpendicular to DB. For the wave of light DN, being likewise represented by a straight line, it will be seen that all the points of this wave, travelling as far as the surface KD along lines parallel to DB, will advance subsequently towards the point B, and will arrive there at the same time.
Ate. On the left headboard 'C. On the front side 'C' On the right headboard 'A. On raising the lid the following inscription was found on the inner side of the same carved in German Gothic characters: 'Illtre. y Esdo. Varon Dn.
En vous rappelant quelques traits de cette noble figure je voulais, comme je vous l'ai dit tout a l'heure, acquitter une dette de coeur envers un ami qui, jusqu'aux derniers moments de sa vie, m'a prodigue les marques d'affection. 'La memoire du philosophe, du lettre, de l'erudit, dn confrere eminent, de l'homme bon et aimable, merite de rester honoree dans notre compagnie.
He is a music master, or a penny-a-liner, or a third-rate artist. Dn his good looks!" Mr. Giovanelli had certainly a very pretty face; but Winterbourne felt a superior indignation at his own lovely fellow countrywoman's not knowing the difference between a spurious gentleman and a real one. Giovanelli chattered and jested and made himself wonderfully agreeable.
In order to show further that the surfaces, which these curves will generate by revolution, will direct all the rays which reach them from the point A in such wise that they tend towards B, let there be supposed a point K in the curve, farther from D than C is, but such that the straight line AK falls from outside upon the curve which serves for the refraction; and from the centre B let the arc KS be described, cutting BD at S, and the straight line CB at R; and from the centre A describe the arc DN meeting AK at N.
And this operates so that all the parts of the wave of light DN, coming to meet the surface KDE, will advance thence along parallels to KS and will arrive at this straight line at the same time; of which the proof is again the same as that which served for the first oval.
The result of these labors was his work entitled, "Relacion de la sucesion y govierno de las Yngas Senores naturales que fueron de las Provincias del Peru y otras cosas tocantes a aquel Reyno, para el Iltmo. Senor Dn Juan Sarmiento, Presidente del Consejo Rl de Indias." It is divided into chapters, and embraces about four hundred folio pages in manuscript.
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