On Perusal of the Letter and Papers receiv’d yesterday from you I am of Opinion, that Cook should be agreed with. It is indeed a great Advance from £30 which he once offer’d the Right for, to £100. Sterlg. but since Dr. Evans supposes it worth £200 Currency, which is something more than £100 Sterling, I should think it adviseable to strike the Bargain, even if you find it necessary to give 10 or £15 more than Philips offers, but not to exceed 20. You will take care of the Particulars of Proof that Dr. Evans says are requisite, and any Assistance I can afford shall be ready. I am, Sir, Your very humble Servant