I want to know the answer to the following question:
How much of a royalty was Gray able to negotiate with a New York publisher for On the Origin of Species?
All the background I'm provided with is that "In the United States, botanist Asa Gray an American colleague of Darwin negotiated with a Boston publisher for publication of an authorised American version, but learnt that two New York publishing firms were already planning to exploit the absence of international copyright to print Origin.". Is that enough to answer the question?
Answer: no