Purchase the book
From Fallen London Wiki
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From: Ambition: Heart's Desire! 2
It's some sort of antique encyclopaedia of animal diseases. But it's the only lead you have.
Unlocked with 
30 x Whispered Hint
Success
The bookseller writes something inside the front cover before he gives it to you...
[…] he's written an address on the grubby fly-leaf. […]
[…] whenever you try to copy it out, you can't seem to get it right. You keep writing the house number down wrong, or putting a completely different street name. So don't lose the book.[Find the rest of the story at https://www.fallenlondon.com]
You now have 1 x On the Maladies of Goats, volume 1
You've lost 30 x Whispered Hint
