The SciencesAugust 21, 1909
Kieselgur or Infusorial Earth
Its many Varied uses
Stories by O. Bechstein
The SciencesJuly 31, 1909
Liquefied Illuminating and Fuel Gas
More about Blau Gas
The SciencesMay 22, 1909
The Technique of Desiccation
The Artificial Drying Of Agricultural Products And Wastes
The SciencesNovember 28, 1908
The Kuch Quartz Mercury Vapor Lamp
What the Substitution of Quartz for Glass Means
The SciencesAugust 29, 1908
How Matches are Made
The Ingenious Machinery Employed