The Egyptian Book of the dead by P. Le Page Renouf and Edouard Naville

⁂⁂⁂⁂ in chapter 116 implying that _Arm_ is to be taken in a geographical sense, as when we speak of an ‘arm of the sea’. Now the pictures which have been spoken of have the words ⁂⁂⁂, ‘arm of the Urnes,’ inscribed ever the stream down which the Sun-god takes his nightly journey. These pictures have only the value of a commentary on a very ancient text, but they are at least as old as the earliest papyrus which contains the text.