The printed words and letters of the words were incorporated into the design of the book to form part of the total image. The subject of each line or group of lines in the poem makes a reference to circular or ovoid forms (such as seeds); in this way visual imagery is also based on ovoid forms, although they are not representational forms. In other words, just as the poem depends on juxtaposition of images which are not only related by shape, so does the visual design.