Scientific American Supplement, No. 794, March 21, 1891 by Various
page 130 of 146 (89%)
page 130 of 146 (89%)
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Thus dried it passes through weighed potash bulbs, after which is placed for safety a small tube containing soda lime and phosphoric acid. After the lapse of about twenty minutes, warming may be once more proceeded with in the same manner as before, and after about two and one-half hours the asbestos plate may be placed directly below the flask, and more strongly heated. The whole operation is very easily carried out, and needs no watching. With substances containing halogens, it is advisable to place, after the copper oxide tube, a small washing flask containing potassium iodide solution. * * * * * NEW RACE OF DWARF DAHLIAS. The dahlia has held a prominent place among garden flowers for many years, and it has received new life in the acquisition of a section little expected by cultivators, but peculiarly welcome. This class is the outcome of much patient work on the part of Mr. T.W. Girdlestone, the well known secretary of the National Dahlia Society, who has for some time past devoted much time to the improvement of the single varieties. We had the pleasure a short time since of receiving a photograph of this dwarf section of dahlias from Messrs. J. Cheal & Sons, of Crawley, who have purchased the stock, and this we have had |
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