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Mr. Mulcaster Farnacres February 1769 I recd the small pieces of silver by Mr. Laybourne and with it your Letter of the 10th instant inclosing the Assays wch I find as follows Per fodder Grains Oz Dwt Gs 1 lb Refineable Lead from Wch the Cake was Extracted 1 69/80 equal 9 2 12 6/10 Do 1 69/80 equal 9 2 12 6/10 Do 1 67/80 equal 9 1 8/10 The mean is 9 1 17 1 lb of Do after Refined 10/80 equal 12 6 1 lb of Thortergill Slagg 2 25/80 11 18 21 Lead This better prodc than Ore lead by calculation from the assy the cake should be 654 3 but it weighed 656 10 difference more 2 7 by your weighing at the Mill viz 45 lb 3 oz avoirdupoise 658 18 17 13/16 I wish you could get through with Middle Cleugh Ore as it is a troublesome thing and encourage the Workmen by telling them when it is done they will have easy work, as it appears to me they will. I have no doubt you will do your best & we must leave it to you to act in this as you find most proper. My Laybourne says he thinks that the Washing might be contsnt if we had pumps laid from the Dam and I beg that may be done unless you see there is any inconvenience which should be avoided; he will be with you in a little time and then you may consult together. I hear Middle Cleugh is turning out rich in the great Lime and the Ore good and of a different Nature a good deal from that we now have. I am Your real Wellwisher NWJunr. * I have spoke to Mr. Labourne about the Tub and he will inform you what we have agreed upon. Pray let me know in your next whether you have yet received the old Bone Ashes which I bought here.
Day not given but assumed to be a few days after the one of the 10th referred to. 15th used here.