15 Langham PlaceSaturdayMarch 17My dear SirI have been prevented, since I had last the pleasure of seeing you by continued indisposition from calling on you as I had hoped, & intended to have done, & to have heard whether you have made any progress in maturing your plans – I shall be very happy if you can call on me in the course of a day or two when I hope to be well Enough to see youMost faithfully yoursMackintosh