. The Gardeners' chronicle : a weekly illustrated journal of horticulture and allied subjects. eries of experiments, is that which we now seeemployed in the Palm-stove, and several other build-ings at Kew. I have brought some specimens toshow you. The glass, as you will observe, is of a lightgreen colour, which is obtained by oxide of copper,and the glass is made so transparent that scarcelyany light is intercepted. This glass is manufacturedentirely free from the oxide of manganese, which iscommonly used in making all ordinary sheet absence of manganese must be insisted on, andfor t
. The Gardeners' chronicle : a weekly illustrated journal of horticulture and allied subjects. eries of experiments, is that which we now seeemployed in the Palm-stove, and several other build-ings at Kew. I have brought some specimens toshow you. The glass, as you will observe, is of a lightgreen colour, which is obtained by oxide of copper,and the glass is made so transparent that scarcelyany light is intercepted. This glass is manufacturedentirely free from the oxide of manganese, which iscommonly used in making all ordinary sheet absence of manganese must be insisted on, andfor this reason : that glass, into the composition of * An illustration of the new boilers was given in theCardiners Ckromde, November 17, 1877. which manganese enters, will lose its green shade,and be certain to assume a pink tint after long ex-posure to much sunlight, and any tint of a pinkcolour would completely destroy the peculiar proper-ties for which this glass is chosen. Messrs. Chance,of Birmingham, are the manufacturers, and I cannotdo better than recommend it for more general use for. SECTION or A FORCING-HOUSE. Fern-houses, Palm stoves, and other similar will be seen, however, by a visit to Kew Gardens,that where the glass has not been carefully manufac-tured, or by other makers, that the green has entirelyleft the glass, the pink tint which I have describedhaving taken its place. The cost, at present, of thistinted glass is, I believe, about twice as much as
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