Excerpt from Studies of Animal Life: A Series of Laboratory Exercises for the Use of High Schools
Sketch. When this term is used, a rapid drawing on the note paper is intended.
Drawing. When this term is used, a careful outline drawing is intended. This is to be made on the drawing paper with the hard pencil or a pen.
Diagram. This indicates a drawing in which the relation of the parts is shown, rather than the form.
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