This determination of the scope of attention is, however, dependent upon one condition, which is exactly the opposite of that introduced in measuring the scope of consciousness. This latter was only possible by using rows of impressions that were bound together into one complex whole. To measure the scope of attention, on the other hand, we must isolate the separate impressions from each other, so that they form an unarranged multiplicity of elements. This is a difference in conditions which certainly does not only depend upon the fact that in the first case the sense of hearing and in the second case the sense of sight was used. We rather conjecture at the very outset that here the chief influence lay in the psychological conditions, in the first case in the combination of the elements into a whole, and in the second in the isolation of the elements. At once the following question naturally arises: What will happen if we, so to speak, change the rôles of these two senses, if we let impressions, connected together as wholes, work upon the sense of sight, and isolated impressions upon the sense of hearing? In the first case we have simply to combine letters together, so that they form words or sentences. A letter is nothing more than an element that has been artificially taken out of such a natural combination. Now if we carry out with these parts of speech experiments in the same manner as we have described above, we obtain, in fact, an absolutely different result. If we show the observer a word such as this-- Miscellaneousness,