But in 1827, the time had not yet come for composition. He was hearing books read to him and was taking copious notes. How copious these were, his different secretaries have told; and besides, great masses of them have been preserved as testimony to the minute and patient labour of the man who made and used them. As his reader went on, Prescott would say, "Mark that!" whenever anything seemed to him especially significant. These marked passages were later copied out in a large clear hand for future reference. When the time came, they would be read, studied, compared, verified, and digested. Sometimes he spent as much as five days in thus mastering the notes collected for a single chapter. Then at least another day would be given to reflection and (probably) to composition, while from five to nine days more might go to the actual writing out of the text. This power of Prescott's increased with constant exercise. Later, he was able to carry in his head the whole of the first and second chapters of his _Conquest of Peru_ (nearly sixty pages) before committing them to paper, and in preparing his last work, _Philip II._, he composed and memorised the whole fifth, sixth, and seventh chapters of Book II., amounting to seventy-two printed pages.
Prescott had elaborated a system of his own for the regulation of his daily life while he was working. This system was based upon the closest observation, extending over years, of the physical effect upon him of everything he did. The result was a regimen which represented his customary mode of living. Rising early in the morning, he took outdoor exercise, except during storms of exceptional severity. He rode well and loved a spirited horse, though sometimes he got a fall from letting his attention stray to his studies instead of keeping it on the temper of his animal. But, in the coldest weather, on foot or in the saddle, he covered several miles before breakfast, to which he always came back in high spirits, having, as he expressed it, "wound himself up for the day." After a very simple breakfast, he went at once to his library, where, for an hour or so, he chatted with Mrs. Prescott or had her read to him the newspapers or some popular book of the day. By ten o'clock, serious work began with the arrival of his secretary, with whom he worked diligently until one o'clock, for he seldom sat at his desk for more than three consecutive hours. A brisk walk of a mile or two gave him an appetite for dinner, which was served at three o'clock, an hour which, in the year 1827, was not regarded as remarkable, at least in Massachusetts. This was a time of relaxation, of chat and gossip and family fun; and it was then that Prescott treated himself to the amount of wine which he had decided to allow himself. His fondness for wine has been already casually mentioned. To him the question of its use was so important, that once, for two years and nine months, he recorded every day the exact amount that he had drunk and the effect which it had had upon his eye and upon his general health. A further indulgence which followed after dinner was the smoking of a mild cigar while his wife read or talked to him. Then, another walk or drive, a cup of tea at five, and finally, two or more industrious hours with his secretary, after which he came down to the library and enjoyed the society of his family or of friends who happened in.