LONDON.- The British Museums major Autumn exhibition, supported by BP, will present and explore ancient Egyptian beliefs about life after death. Journey through the afterlife: ancient Egyptian Book of the Dead will showcase the rich textual and visual material from the British Museums unparalleled collection of Book of the Dead papyri. The Book, used for over 1500 years between c. 1600 BC and 100 AD, is not a single text, but a compilation of spells thought to equip the dead with knowledge and power which would guide them safely through the dangers of the hereafter and ultimately ensure eternal life. The British Museum has one of the most comprehensive collections of Book of the Dead manuscripts on papyrus in the world, and this exhibition will be the first opportunity to see so many examples displayed together. The exhibition will include the longest