Three dog skulls from ‘Secrets of Bones’ hosted by Ben Garrod. The first image shows a regular dog skull; this contains both collagen, an organic compound, and calcium phosphate, a mineral compound.
In the images with the red gloves, another skull has been left in an oven for a few days. This has taken out all of the organic compounds, leaving just the mineral compounds. As you can see, this bone is too brittle to be of structural use.
In the images with the blue gloves, a skull has been soaked in formic acid for over a month. This removed the calcium phosphate from the bone but leaves the collagen. The surprising result is a very flexible skull.
Whaaaat. That is awesome.
If you haven’t seen ‘Secrets of Bones’ I’d highly recommend it. Here are links to the episodes on YouTube:
Norwegian cat chases a fox off its owner’s property [dailymail]
French, Paris, 1861
One day, a glazed look in her eyes, my mother said to me: ‘When you are in bed and you hear the barking of the dogs in the countryside, hide beneath your blanket, but do not deride what they do: they have an insatiable thirst for the infinite, as you, and I, and all other pale, long-faced human beings do.’
Since that time, I have respected the dead woman’s wish. Like those dogs I feel the need for the infinite. I cannot, cannot satisfy this need. I am the son of a man and a woman, from what I have been told.
This astonishes me…I believed I was something more.
Comte de Lautréamont | Le Chants de Maldoror
Photo: Frederic Fontenoy | Métamorphose