There have been many theories to that question. Was it socially expected? Why? Was it due to lead poisoning? Corset binding? Lack of nutrition? Feminine delicateness? An easy way to escape discussions of politics? Attention? The most likely answer is a combination of all of these.
Why do we laugh? We laugh for a variety of reasons, and most are not because something tickled our funny bone. While many species have been observed to laugh, not many, if any, have incorporated laughing so extensively into their methods of communication.
The Nimrud Lens: The earliest magnifying glass discovered. It dates back to the Assyrians and was made about 3000 years ago.
The unparalleled Paco de Lucia playing Tico Tico.
Scientists, in their attempt to find the right combination and amount of preservation materials used by the Egyptians in their embalmbings, they have taken to curing many, many human legs.
In 1895, J St. Leo Strachey published one of the first books on the psychology of the dog, where he examines and describes the various natures and habits of dogs. As the article explains,
There are tales of syllogistic dogs, sermonising dogs, hospital dogs, parcel-carrying dogs, and purchasing dogs – that is, dogs which “understand the first principles of the science of exchange”. We learn of dogs with a sense of humour, dogs’ talent for friendship with hens, rabbits, and pigeons, dogs that foretell death, and dogs that recognise themselves in the mirror. By the time we get to the end of the book we may agree with Strachey that “a single story of a clever dog may amuse, but… if we have half a dozen illustrating the same form of intelligence, the value of the evidence is enormously increased”.
Dr. Edmund King of the Royal Society was the first person to successfully perform a blood transfusion in 1667, where he ran sheep’s blood through a man’s veins for a full 2 minutes. While very interesting, do not read if you are squeamish about details on cutting veins, blood, etc.