This month’s lecture at RAL Harwell was postponed until July, so 9 members met in the Town Hall to talk about anything science related. Martin gave an interesting presentation on the making of glass from the collection of sand from the beaches at Southport, to the chemical elements which come from various countries, and are added to the mix to make different types and colours of glass. Hopefully we can learn more about glassmaking at another meeting.
This was followed by a talk on how the animal world is surprisingly helping itself outwit human intervention, from australian snakes developing smaller jaws so they cannot eat the large poisonous cane toads, introduced as pest control to the cane fields, to swallows which nest under bridges on motorways, developing shorter wings so they are more manoeverable in flight. The roadkill statistics for swallows are down by nearly 50%. In Africa, statistics show that elephants are being born with smaller tusks, or even tuskless, to foil the ivory poachers. In one game reserve alone, 60 years ago only 1% were born with no tusks, today it is 33%. Clever elephants.
Then we had a talk from Brian about his visit to Chatham dockyards, and the rope factory in particular. He told us about the manufacture of rope used on sailing ships, and how flax was plaited and twisted by hand several times to make the required thickness. Surprisingly there are only a few ‘ropes’ onboard ships as many have different names, such as sheets, painters and halyards.
Following a lively discussion, we all agreed that this had been a really good meeting, and one that will be repeated in future.