Victoria, from the depth of her heart, subscribed to all the eulogies of Feodora and Mr. Klumpp. She only found that they were insufficient. As she watched her beloved Albert, after toiling with state documents and public functions, devoting every spare moment of his time to domestic duties, to artistic appreciation, and to intellectual improvements; as she listened to him cracking his jokes at the luncheon-table, or playing Mendelssohn on the organ, or pointing out the merits of Sir Edwin Landseer's pictures; as she followed him round while he gave instructions about the breeding of cattle, or decided that the Gainsboroughs must be hung higher up so that the Winterhalters might be properly seen--she felt perfectly certain that no other wife had ever had such a husband. His mind was apparently capable of everything, and she was hardly {188} surprised to learn that he had made an important discovery for the conversion of sewage into agricultural manure. Filtration from below upwards, he explained, through some appropriate medium, which retained the solids and set free the fluid sewage for irrigation, was the principle of the scheme. 'All previous plans,' he said, 'would have cost millions; mine costs next to nothing.' Unfortunately, owing to a slight miscalculation, the invention proved to be impracticable; but Albert's intelligence was unrebuffed, and he passed on, to plunge with all his accustomed ardour into a prolonged study of the rudiments of lithography.[8] But naturally it was upon his children that his private interests and those of Victoria were concentrated most vigorously. The royal nurseries showed no sign of emptying. The birth of the Prince Arthur in 1850 was followed, three years later, by that of the Prince Leopold; and in 1857 the Princess Beatrice was born. A family of nine must be, in any circumstances, a grave responsibility; and the Prince realised to the full how much the high destinies of his offspring intensified the need of parental care. It was inevitable that he should believe profoundly in the importance of education; he himself had been the product of education; Stockmar had made him what he was; it was for him, in his turn, to be a Stockmar--to be even more than a Stockmar--to the young creatures he had brought into the world. Victoria would assist him; a Stockmar, no doubt, she could hardly be; but she could be perpetually vigilant, she could mingle strictness with her affection, and she could always set a good example. These considerations, of course, applied pre-eminently to the education of the Prince of Wales. How tremendous was the significance {189} of every particle of influence which went to the making of the future King of England! Albert set to work with a will. But, watching with Victoria the minutest details of the physical, intellectual, and moral training of his children, he soon perceived, to his distress, that there was something unsatisfactory in the development of his eldest son.