Turner, E. M., & Betts, G. H. (1924). Experiment 9. Cutaneous sensation. In E. M. Turner & G. H. Betts, Laboratory studies in educational psychology (pp. 20-22). New York, NY, US: D Appleton & Company.
http://dx.doi.org/10.1037/13535-009
"In actual experience sensations are never known apart from the objects to which they belong. This is to say that when we see yellow or red it is always in connection with some surface, or object; when we taste sour, this quality belongs to some substance, and so on with all the senses. Yet by sensation we mean only the simple qualities of objects known in consciousness as the results of appropriate stimuli applied to end-organs. We shall later see by perception these qualities fuse or combine to form objects, but in the present chapter we shall be concerned with the qualities only. Sensations are, then, the simplest and most elementary knowledge we may get from the physical world,—the red, the blue, the bitter, the cold, the fragrant, and whatever other qualities may belong to the external world." The objective of the experiment in this chapter is to aid in the reader in investigating and determining the number and general nature of cutaneous sensations. (PsycINFO Database Record (c) 2016 APA, all rights reserved)