This really is a superb book. It's one of the most enjoyable, fascinating and often hilarious books I have read in recent years.
The book is a series of short essays, arranged in alphabetical order. They could be read straight through from A to Z (as I did), or in an order of the reader's choosing. Each essay is about a thing, person, or idea that (for some reason) no longer exists, has vanished or has been lost. Mr Bywater proves himself to be erudite on a wide range of topics, from Roman civilization to modern computers, from hats to patented inventions. He writes about each topic with wit, charm, style and verve. He has a great prose style in English, and also knows some Latin and Greek (which he helpfully translates).
He is very nostalgic for the past, lamenting the old days before call centres and management theory, when real men wore hats and called each other "old chap", when women were ladies, when teachers were stricter, etc. Sadly, these worlds have been lost forever. Let us hope they will return one day, like a phoenix from the ashes.
I would like to add another example of something that has been lost to humanity only recently: Pears Cyclopaedia.
Mr Bywater was a lifelong friend of writer Douglas Adams, and was the model for detective Dirk Gently. As a real-life Dirk Gently, he never ceases to talk at length while entertaining us.
I would heartily recommend this book to everyone!