As the eager student drank in the lectures of Tatum, he took notes, and he afterwards wrote them out carefully in a clear hand, numbering and describing the different experiments that he saw performed, and making wonderfully neat drawings of the apparatus, in good perspective. These notes he bound in four volumes, adding to each a copious index, and prefixing to the first this dedication to his master:-- "TO MR. G. RIEBAU. "SIR, "When first I evinced a predilection for the sciences, but more particularly for that one denominated electricity, you kindly interested yourself in the progress I made in the knowledge of facts relating to the different theories in existence, readily permitting me to examine those books in your possession that were in any way related to the subjects then occupying my attention. To you, therefore, is to be attributed the rise and existence of that small portion of knowledge relating to the science which I possess, and accordingly to you are due my acknowledgments. "Unused to the arts of flattery, I can only express my obligations in a plain but sincere way. Permit me, therefore, Sir, to return thanks in this manner for the many favours I have received at your hands and by your means and believe me, "Your grateful and obedient Servant, "M. FARADAY." Now there happened to be lodging at Mr. Riebau's a notable foreigner of the name of Masquerier. He was a distinguished artist, who had painted Napoleon's portrait, and had passed through the stirring events of the first French Revolution, not without serious personal danger, and was now finding a refuge and a home in London. He was struck with the intelligence of the apprentice, whose duty it was to do various offices for him; and he lent the young man his books, and taught him how to make the drawings in perspective which have already been alluded to.