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In 1859, when Conan Doyle wrote "The history of spiritualism", the term 'sensitive plate' was just starting to be used to describe a glass plate coated with light-sensitive chemicals. The term was still in use in 1888 when this edition of the Photographic News was published but, as this NGram graph shows, from then on the term was quite rapidly overtaken by '...


2

We live off campus Means "we don't live on campus". I live off the farm. Most typically means the farm is your means of living. Either you make your living by selling the products of the farm, or you actually eat the food produced on the farm. Possibly, you also live in a house that's part of the farm. I live off Main Street. Means you live on a ...


1

I have not personally ever heard this before either. I suspect it is intended to be a regional dialect, and as was noted in the comments, that isn't even actually in the original shooting script, which suggests that it may have been a last-minute addition for color, or even an ad-lib. I believe you are correct in the meaning of "tying a rope". It may come ...


1

No, it's ordinary "but". "Somebody who is the most pronounced sceptic, but also the most honest sceptic".


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