Originally posted by caz
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I've been meaning to reply.
As Caz seems to already acknowledge, her version is indeed open to dispute.
Originally, Kellingsley did express reservations about how a solubility test could conclusively date a document, but this was in the context of asking for a new and non-destructive test to determine the diary’s chemical composition. Obviously, there have been significant scientific advances since the 1990s which would be far more conclusive than the earlier tests.
But Caz is clearly not remembering the whole exchange.
Back on 8 March 2023, I gave Kellingsley the full description of the solvency test as described in Baxendale’s July 1992 report:
"In this, a small sample of ink is dissolved from the paper using a suitable extraction solvent (a mixture of pyridine and water in equal parts). The solution is then applied as a small spot to one end of a glass plate bearing a thin coating of very fine silica gel. After the solvent has evaporated the edge of the plate is immersed in an eluent (a mixture of botanol, ethanol and water 4:I:II). This travels slowly up the silica gel layer by capillary action. As it does so, the components of the ink also migrate but at different rates, so that a separation is obtained...The ink was readily soluble in the extractant and only a small amount of insoluble black residue was left on the paper."
Further, in his conclusion Baxendale wrote that the ink was "freely soluble" and that this feature pointed to "an origin much later than 1889".
The key part of Kellingsley’s response on the same day (#353 of 'Maybrick diary' thread on JTR Forums) was:
“I would incline to think he's right.”
That certainly doesn’t quite sound like he is “disputing” Baxendale, as Caz remembers it. It sounds like he’s inclined to agree with him.
As to her claim that "Even Baxendale himself never hinted that it could have been written as recently as April 1992."
This doesn’t hold up to scrutiny.
When speaking to Maurice Chittenden of the Sunday Times in 1993, Baxendale said that the diary “had probably been written recently, in the past two or three years."
A quick check on a pocket calculator shows that 2-3 years prior to 1993 would certainly include April 1992, so Baxendale did indeed hint that it could have been written just prior to Mike and Anne bringing the diary to London.
Anyway, to each his or her own. I think I'll now play the waiting game and see if someone in Liverpool will eventually tell us the whole story.
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