Inscribed and initialed in red ink in a hand believed to be that of Peter Taylor Young, Procurator Fiscal of the Sheriff Court Glasgow, at the head of first page: G 222/3. P.T.Y.
Inscribed in ink at bottom of fourth page: "Lodges, JM, BML." These are the signatures of Glasgow sheriff-officer John Murray, and his assistant Bernard M'Lauchlin. The word "Lodges" signals where the letter was found.
Cross-writing on pages 1-4.
This seems to be a continuation of a letter. It's possible that "G 222" (potential exhibt number) has previous sections (1-2), but they are not included; this letter begins somewhat abruptly.
Writing that they will not get to meet at the house because some sort of event is happening at India Street; apologizing beause they will not have the chance to see each other, even in passing in the street; expressing anxiety about Miss P and whether or not she hates her; asking him for book recommendations; requesting that he write to her to let her know if he is well; encouraging him to go to the doctor if he is unwell; asking him not to enlist in the Crimean War (1853-56); reminding him that he must remain where he is, even if he is not rich, as "wealth rarely brings happiness"; noting that this is the fifteenth letter she has written that day; stating that if she had wings, she would fly to him, and she hopes that God will bless and protect him.