𝔖 Bobbio Scriptorium
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Malaria mosquitoes controlled by airplane dusting : (U. S. Dept. of Agriculture.)


Publisher
Elsevier Science
Year
1926
Tongue
English
Weight
97 KB
Volume
201
Category
Article
ISSN
0016-0032

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✦ Synopsis


May, I926. ]

CURRENT TOPICS. 669 in 19t 9 showed that two forms of organic sulphur usually exist in coal. Iron sulphide occurs in different forms. Examination of sections under the microscope shows often minute particles of pyrite or marcasite.

Fraser and Yancey give numerous analyses of coals to show the respective proportions of pyrite and organic sulphur and also tables showing material reduction of sulphur by methods of washing. The paper concludes with a discussion of the relation of sulphur to the manufacture of pig iron.

H.L.


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