Lick Observatory
an astronomscope, superior to and more powerful obligation of erecting "a powerful tele- testator imposing in the trust-deed the scope, superior to and more powerful than any telescope yet made." In 1881 testator imposing in the trust-deed the than any telescope yet made." In 1881 & Sons for "an achromatic astronomical the trustees contracted with Alvan Clark object-glass of 36 inches clear aperture" (this being the largest the Clarks would Nov. 1, 1883. The price was $50,000.
The flint glass disk was successfully cast venture to contract for), to be delivered object-glass of 36 inches clear aperture" (this being the largest the Clarks would Nov. 1, 1883. The price was $50,000. 1882. Its companion, the crown-glass by Feil & Sons, Paris, France, early in The flint glass disk was successfully cast disk, was cast and ready for shipment at the close of 1882, but the material was in packing. The difficulties attending the casting of the crown disk were extraordinary, and it was not till 1886 that so brittle that it unfortunately cracked success crowned the efforts of the Messrs. reached Mount Hamilton, and Feil. This monster object-glass safely was