Sudden temperature drop - utterly discomposed

Another account of a mysterious drop in temperature and feelings of extreme unease in Senate House Library:

"The details are lost to the mists of time since this happened more than a year ago, but one day I was up in the Stack looking for a book. It was light outside and temperate inside, ideal (i.e. reassuring) conditions for being in the usually creepy Stack. As I was crouching for the book, it suddenly became cold, but there was no draft – just a drop in temperature. I also remember the silence started to roar in my ears in a rather eerie and persistent fashion. These two occurrences served to discompose me utterly and instil in me an urgent need to skedaddle out of there as soon as possible. I am happy to report however that the ‘presence’ in question (if it wasn’t just my nerves) took pity on me and did not make an appearance – for surely if it had, there would soon thereafter have been a death (from fright) in Senate House and perhaps another ghost to add to the collection."