The density of liquid can not only help with sciences, but can help you with finding out the murderer of a crime novel. For example, if the killer had poisoned the ice or drink, knowing what the density of liquid can help you find out what poison was used or the antidote.
The barber Ivan Jakovlevitch finds Major Kovaloff's nose in his bread. It happens all of a sudden, without any introduction, on a usual morning. What makes this occurrence even weirder is the fact that he recognizes the nose, as if all the noses in this world aren't similar, and instantly starts quarrelling with his wife, who accuses him of having chopped off a customer's nose.
