Another situation of every-day life in which we become aware of the images is when riding in a street car at night we look out of the window and fail to recognize the individual buildings as we pass them though we perceive them as houses. The neighborhood being obscured by darkness, the buildings have no meaning from the point of view of their uses, proprietorship, locality, etc., but only from an architectural point of view. Then suddenly, by some apparently subconscious process, visual memory images of the unseen neighborhood (hidden in darkness), and of the interior of the buildings, flash into consciousness in conjunction with the actual visual pictures of the buildings. In imagination we at once see the locality and recognize (or apperceive) the buildings which acquire a new meaning as particular shops, which we have often entered, located in a particular locality, etc. Again, take a tactual perception: If you close your eyes and touch, say a point on your left hand, with your finger, you not only perceive the touch but you perceive the exact spot that you touched. Your perception includes localization. Now if you fix your attention and introspect carefully you will find that you visualize your hand and see, more or less vividly, the point touched (and the touching finger). If you draw a figure on the hand you will visualize that figure. That is to say imaginal visual images of the hand, figure, etc., enter into the tactual perceptions. You will probably also be able to feel faint tactual “images” of the hand (joints, fingers, etc.) which combine with the visualization.[156] The whole complex is the perception proper. The images which take part in actual perception, or in ideas of objects, vary with the mode of perception (whether visual, auditory, tactile, etc.) and with objects, and in different people. Reading, or the perception of words, is in many people accompanied by the sound of the words or kinesthetic images of words. If the printed words are those of a person whose voice is familiar to us we may actually hear his voice.[157] General kinesthetic images may occur in perception, as with objects which look heavy, i.e., have secondary tactual sensations of heaviness. Likewise tactile and olfactory images may enter the perceptual field and supplement the visual sensations. When the sensational experiences of perception are tactile, auditory, olfactory, or gustatory visual images probably always take part in the perceptual field if the object is perceived as, e. g., the perception of velvet by touch and of an orange by smell. Summing all this up we may say, using Titchener’s words: “perceptions are selected groups of sensations in which images are incorporated as an integral part of the whole process.” We may further say the secondary images give meaning to sensations in forming a perception.