The School of Chemical Engineering Practice, as established by ;the Massachusetts institute of Technology, gives the student practice i n applying previously learned theory to the "unit operations" into which the field of chemical engineering is dioided. The two primary unit operations are flow of fluids and flow of heat, while the secondary unit operations are eoaporation, distillation, filtratign, extraction, combustion, drying, etc. It is felt that not only is it necessary for the student to

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... have a knowledge of the fundamentals of the science but that he also must have training in the use of this knowledge. Instruction in the application of knowledge is eflectioely gioen by using industrial plants as laboratories of chemical engineering, since the work is not stereotyped and may be made to deoelop resourcefulness and judgment in the student. EFORE considering the study of chemical engineering by the unit-operation method as carried out in the School of Chemical Engineering Practice of the Massachusetts Institute of Technology, i t will be necessary to give a brief description2 of this School, together with the methods employed in teaching chemical engineering by experimental work on full scale operating equipment.