ation of the light. The lantern is 1214 inches high, including chimney ; liquids used in experiments in the vertical lantern. It The number of interesting experiments which may the cylindrical body is 5inches in diameter and 64 consists of a plate of glass to which is secured a ring of be… … lens, 23g inches in diameter and 4 inch focus. The rear instructive amusement may be gotten out of the lan- this tank may be placed clean water. A cambric lens of the objective is a double convex, 234 inches dia- tern with little expense beyond the cost of the instru- needle, carefully laid on its…
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![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten02unit-564-243.webp)
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