In making his studies of old houses and churches, Meryon seldom made a complete drawing on the spot. He would go every day at the same hour and make minutely finished studies of details on small bits of paper, which he either stuck together or made another drawing from them. He used an exceedingly sharp, hard pencil; the astonishing fineness of the line that he produced with it may be well seen in two early drawings of Rouen Cathedral from the Seine in the British Museum, which also possesses some of the drawings of architecture at Bourges, a place which first fascinated him on a visit made about 1848. In drawing architecture Meryon always worked upwards from the bottom of his object, saying that buildings were begun from the foundation and the artist should follow the same method as the builder. In the same way he would draw men from the feet upwards, saying that they must always be planted firmly on their feet before they began to do anything. _Le Petit Pont_ well illustrates another peculiarity of his practice in drawing architecture. He deliberately renounced any competition with the camera of the photographer, and claimed the right to arrange the different parts of what he drew in the manner best calculated to convey a certain impression, while preserving the utmost exactness in the representation of detail in each part. It has been observed, by those who know the spot well, that the towers of Notre-Dame, which dominate the whole composition, are much too high in the etching in regard to their actual dimensions and to the laws of perspective. After taking a drawing from very low down, near the edge of the water, Meryon drew the towers again from the level of the street, as the passer-by would habitually see them, and fitted this drawing with great skill into the former one, constructing by this combination a composition which produced the desired effect of impressive and majestic height, all the details being absolutely accurate, though on reflection it might be discovered that they could not all be seen at once.