is invention consists in having the back formed of a bar This planet is receiving a good deal of attention frem as- or rod of iron, preferably round, with one end, fitting in a tronomical observers. hole in the handle, so as to shift forward back, with a W. Lassell, Esq., ex-President of the Royal… … flat backs are very expensive to make, whereas in this inven- ed body, some remarks upon this subject, with a sketch of in diameter. A weighed faggot or bundle of clean platinum tion any suitable bar or rod of the right size is completed by the planet as seen by him in his 2-féet Newtonian…
Internet Archive · Public domain (published before 1931). Free to use for anything.
