Sory, BABI, I meant to type BARB. I've ordered the book from Amazon.
I hate cold, and tolorate heat fairly well. Having lived with both dry heat and humid heat, there is a world of difference. The sprinkler cheme wouldn't work well in high humidity, you just swelter in the moisture. It is evaporation that cools you, and in high humidity, the water doesn't evaporate.
When I lived in the Negev in Israel, temperature over 100 most days in the summer, if I was walking alongand saw a sprinkler, I would go and stand in it til I was soaked: hair, clothes, shoes, everything. I'd keep on walking and by the time I'd gone a block, I'd be bone dry, even shoes. The dry air just sucked the moisture off me, and the resulting cooling effect left me cool as a cucumber.
If I'd tried that in Washington, DC, wqith their hot humid Summers, I'd just have been hot AND wet.
(If anyone cares about the physics, dry air can "absorb" the moisture, but in the process, it takes energy from your skin and air in the form of heat, leaving them cooler. Humid air already holds as much moisture as it can hold, so nothing happens.