The book of lantern ; being a practical guide to the working of the optical (1888)

Page scan 00064 from The book of lantern ; being a practical guide to the working of the optical

Record Details:

Title:
The book of lantern ; being a practical guide to the working of the optical
Date:
1888
Publisher:
London : Wyman & Sons
Volume:
The book of lantern ; being a practical guide to the working of the optical (or magic) lantern ; with full and precise directions for making and colouring lantern pictures
Leaf #:
00064
Language:
English
Collection:
Books
Format:
Books
Contributor:
University of California Libraries
Sponsor:
MSN
Coordinator:
Media History Digital Library
Date Added:
July 19, 2022
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THE BOOK OF THE LANTERN. 51 is allowed to impinge upon it; it should be so adjusted that the gas just escapes touching it while passing through its flame. This form of lamp is sometimes fitted with a wick of asbestos, which well resists the greatest heat that can be brought against it. The oxycalcium lamp is valu- able where no hydrogen gas can be obtained, and, while far more powerful than a mineral oil flame, can hardly be considered sufficiently powerful for use in a public lecture hall. It is used in many of the hospitals in conjunction with a simple form of lantern for throwing light upon patients during certain operations. Before I reached the mature age of twelve I had made oxygen gas by nearly every available method, and had used in this work sundry blacking bottles, ginger-beer bottles, gun-barrels, and gas-pipes, employing as gas-bags disagreeable bladders fresh from the butcher's. It is a wonder to me that I was never blown skywards, but blown-up in a figurative sense I often was. It is now my turn to assume the position of "stern parent,"but in doing so I soften towards the juvenile ex- perimenter in memory of my own misdeeds. Perhaps a description of my first lime-light jet, made at the cost of a few pence, of two FlG - 21 - gasfitters' blowpipes, will answer the purpose better than anything else, of demonstrating the principle of the ordi- E2