An explicit detail is one that is fully expressed or revealed without ambiguity or vagueness. It normally involves numerous pieces of information that will help the reader effectively understand the context and content of what the transmitter of the message is trying to convey.
The passage "This is a cold room in University Administration, wood-walled, Remington-hung, double-windowed against the November heat, insulated from Administrative sounds by the reception area outside, at which Uncle Charles, Mr. deLint and I were lately received." is an explicit detail as it tries to give a very detailed explanation about the room in which the author, his uncle Charles and Mr. deLint were received.
Victor is perpetually ill, whether it be emotionally, physically, or a combination of the two. His numerous anxieties and regrets appear to be causing him to become ill and to become isolated from society. This is Victor's most important means of evading capture. Victor appears to believe that his physical detachment from his source of stress relieves him of his feelings of guilt and obligation. Victor's condition has the potential to occupy him for months at a time. If he is able to do so, he will simply depart and seek refuge in remote locations such as the Alps. Individual and societal shame, which Victor places on himself, are the root causes of his ailments, which are chronic and progressive.
