Rare first edition of this important work on the interpretation of dreams, sometimes attributed to Ahmad Ibn Sirin, but more likely to be the work of Albumasar (Apomasar being a further corruption of the usual Latin corruption of Abu Mashar). The original Arabic text is lost, but it survives in Greek (also held in the Arcadian collection). This extensive work is drawn mainly from Indian, Persian, and Egyptian sources, comparing their different interpretations and particularly mentioning interpreters of dreams of the kings and pharaohs of those countries. According to the preface, the interpretation will differ depending on status, wealth and gender and the dreamer and the time of the dream. For example, to see a tree blossom is a good sign in spring but a bad one in autumn.