I also have a copy of the
PADI encyclopedia of recreational diving, dated 1993, and agree that it attempts both broad and in-depth coverage of the subject matter. However, I find its treatment of the historical development of diving equipment to be coloured by occasional smugness about modern times having the monopoly of wisdom, e.g. the conviction that "composite" fins must be better than all-neoprene/rubber ones because the products of petrochemistry must be better than the fruits of nature. The development of diving equipment technology from the pioneering days to the present, like technology of any kind, is often more about trade-offs, manufacturing economics and whims of fashion than it is about genuine scientific progress. In my eyes, modern diving gear is "different", not better just because it's new.
I'm a big fan of pre-1970s diving and I snorkel accordingly, using a traditional rubber-skirted oval mask, a pair of all-rubber full-foot fins and a simple J-shaped snorkel when I swim in the North Sea off the North East coast of England. I have a modest library of diving books, about 200 volumes, all published before 1980. My favourite tome is Peter Small's
Your guide to underwater adventure - I own a first edition published in 1957:
My favourite photograph within the book is the following:
This picture of a British family enjoying snorkelling at the seaside in the UK, together with its caption "If underwater swimming is not fun, it's not anything", stands in stark contrast to the popular perception of modern diving as an activity which can only be pursued by beautiful people in remote tropical paradises with overengineered, overfeatured and overpriced equipment. Small was a brilliant journalist who was also one of the founder members of the British Sub Aqua Club. He died at a tragically young age while assisting in a depth record attempt in the early 1960s.
Small's book, which helped me fall in love with my lifelong passion of snorkelling, has the following blurb on its dust jacket:
This is a book for the serious beginner, going into careful details of equipment and technique, and explaining the Why as well as the How of things whenever possible. "I have tried," says Peter Small, "to write the sort of book which I would like to have read when I first felt the urge to take up underwater swimming." Do's and Don'ts of choosing equipment - and approximate prices - are examined and the steps in training are followed stage by stage. The author also describes some of the interesting things that can be done underwater, including photography, surveying, and archaeological exploration, and concludes with useful appendices giving details of where cylinders can be re-charged, holiday and training centres, a book list and films that are available for hire.