Notable investigations have been carried out by Indus- 
trial Fellowships on subjects in the following fields: bread, 
by-product coking, carbon dioxide, cellulose, citrus products, 
composition flooring, corrosion, dental products, edible 
gelatin, electrical precipitation, enameled ware, fertilizers, 
fiber containers, fish products, flotation of ores, food and 
beverage flavors, fuels, galvanizing, garment cleaning, glass, 
glue, heat insulation, hydro-metallurgy of copper, inks, in- 
secticides, laundering, magnesia products, matches, natural 
gas, nickel, olefine gases, organic synthesis, perfumes, petro- 
A Corner of a Research Laboratory in Mellon Institute 
leum, protected metals, refractories, roofing materials, rubber 
compounding, sleep, smoke abatement, sodium silicate, stove 
enamels, sulfur, synthetic resins, vitamins, vitrified tile. 
wood chemicals. wrought iron. and zine. 
GENERAL PRINCIPLES oF THE INDUSTRIAL FELLOWSHIP 
SYSTEM 
In accordance with the System of the Institute, an indivi- 
dual industrialist, a company, or an association of manu- 
facturers, that has a suitable problem or group of problems 
that requires investigation, may become the donor of an 
Industrial Fellowship, provided the problems are of sufficient 
scope to warrant the services of at least one man for a period