Having now in part recovered my health, being weary of the country, and perceiving there was money to be got in London, and thinking myself to be as sufficiently enabled in astrology as any I could meet with, I made it my business to repair thither; and so in September 1641 I did; where, in the years 1642 and 1643, I had great leisure to better my former knowledge: I then read over all my books of astrology, over and over; had very little or no practice at all: and whereas formerly I could never endure to read _Valentine Naibod's Commentary upon Alcabitius_, now having seriously studied him, I found him to be the profoundest author I ever met with; him I traversed over day and night, from whom I must acknowledge to have advanced my judgment and knowledge unto that height I soon after arrived at, or unto: a most rational author, and the sharpest expositor of _Ptolemy_ that hath yet appeared. To exercise my genius, I began to collect notes, and thought of writing some little thing upon the [symbol: aspect "conjunction"] of [symbol: Saturn] and [symbol: Jupiter] then approaching: I had not wrote above one sheet, and that very meanly, but James Lord Galloway came to see me; and, by chance, casting his eyes upon that rude collection, he read it over, and so approved of it, yea, so encouraged me to proceed farther, that then, and after that time, I spent most of my time in composing thereof, and bringing it, in the end, into that method wherein it was printed 1644. I do seriously now profess, I had not the assistance of any person living, in the writing or composing thereof. Mr. Fiske sent me a small manuscript, which had been Sir Christopher Heydon's, who had wrote something of the conjunction of [symbol: Saturn] and [symbol: Jupiter], 1603; out of which, to bring my method in order, I transcribed, in the beginning, five or six lines, and not any more, though that graceless fellow Gadbury wrote the contrary: but, _Semel et semper nebulo et mendax_. I did formerly write one treatise, in the year 1639, upon the eclipse of the sun, in the eleventh degree of Gemini, May 22, 1639; it consisted of six sheets of paper. But that manuscript I gave unto my most munificent patron and ever bountiful friend, William Pennington, of Muncaster in Cumberland, Esq., a wise and excellently learned person; who, from the year 1634, even till he died, continued unto me the most grateful person I ever was acquainted with. I became acquainted with him by means of Davy Ramsey. Oh! most noble Esquire, let me now beg your pardon, if I digress for some small time, in commemorating his bounty unto me, and my requital of his friendship, by performing many things successfully for his advantage.