bject glass and second mirror are E level of the lantern. carried by another ring of the same retort stand. The pre- In fie Chemical Neios for February 35, 1870, there is de- sent writer has further simplified this construction by using scribed, by Edwin Smith, M. A., an arrangement for show- a… … bolts; after boring and turning, I soaked it well in oil and on the screen, we must, in the first place, have such a combi- the figure; and from put in place. It has now been running about one year and nation of lenses in the condenser as will secure an even dis- thema bundle of paral- is,…
