As it now stands, I Enoch appears to consist of the following five major divisions: (1) The Book of the Watchers (chaps. 1-36); (2) The Book of the Similitudes (chaps. 37-7l)-, (3) The Book of Astronomical Writings (chaps. 72-82); (4) The Book of Dream Visions (chaps. 83-90); and (5) The Book of the Epistle of Enoch (chaps. 91-107).