Second report of the Wellcome Research Laboratories at the Gordon Memorial College, Khartoum / Andrew Balfour.

  • Balfour, Andrew.
Date:
1906
Catalogue details

Licence: Attribution 4.0 International (CC BY 4.0)

Credit: Second report of the Wellcome Research Laboratories at the Gordon Memorial College, Khartoum / Andrew Balfour. Source: Wellcome Collection.

Provider: This material has been provided by London School of Hygiene & Tropical Medicine Library & Archives Service. The original may be consulted at London School of Hygiene & Tropical Medicine Library & Archives Service.

    280/296 (page 244)
    boiling takes place in a beaker on which rests a semi-spherical glass evaporating dish nearly filled with cold water. Very little steam escapes uncondensed. If the material to be analysed is carried up the side of the beaker it is readily dislodged and brought back into the liquid by means of the rubber-tipped rod. A Simple Form of Blast Lamp fok Use with Benzine Benzine As already noted, the acetylene gas employed in these laboratories has been found very Blast Lamp destructive of platinum ware. After several unsuccessful attempts to effect fusions of silicates, etc., by means of spirit bunsens and alcohol blast lamps, the arrangement shown in Fig. 106 was finally adopted. The blast from a Fletcher blower is divided into two by means of a Y tube. One of these is connected directly with the air inlet of an ordinary blast lamp. Fig. 106.—A simtlh i orm of Blast Lamp for i'se with Benzine. and the other made first to pass through one or two bottles containing benzine. Each of these blasts is controlled by means of a stopcock. The air jet of the lamp should be the largest of the three usually supplied. With a little practice in adjusting the air supply, fusions may be made withoiit difficulty. The flame is found to have no harmful effect on platinum. Conclusion In conclusion I wish to acknowledge the very great part which Mr. Groodson has taken in the work which has been done since the beginning of the year. In addition to the Nile water examinations, which will be published in the next report, he has lent a very helping hand in practically all the analyses and investigations which have been made since his arrival.