In this manner the feeding is continued from the fourth to the seventh week, the quantity of solid food being gradually increased. In the sixth or seventh week the milk is by degrees withheld, and water or butter-milk used instead; and soon after this, green food may be safely given, increasing it gradually with the hay to the age of ten or twelve weeks, when it will do to put them upon grass alone, if the season is favorable for it. A lot as near the house as possible, where they can be easily looked after and frequently visited, is best. Calves should be gradually accustomed to all changes; and even after being turned to pasture they ought to be taken in if the weather is not dry and warm. The want of care and attention to these little details will be apparent sooner or later; while, if the farmer give his own time to these matters, he will be fully paid in the rapid growth of his calves. It is especially necessary to see that the troughs from which they are fed, if troughs are used, are kept clean and sweet. But there are some even among intelligent farmers who make a practice of turning their calves out to pasture at the tender age of two and three weeks, and that, too, when they have sucked the cow up to that time, and allow them nothing in the shape of milk or tender care. I cannot but think that this is the poorest possible economy, to say nothing of the cruelty of such treatment. The growth of the calf is checked, and the system receives a shock from so sudden a change, from which it cannot soon recover. The careful Dutch breeders bring the calves either skimmed milk or butter-milk to drink several times a day after they are turned to grass, which is not till the age of ten or twelve weeks; and, if the weather is chilly, the milk is warmed for them. They put a trough generally under a covering, where the calves may come and drink at regular times. Thus they are kept tame and docile. In the raising of calves, through all stages of their growth, great care should be taken neither to starve nor to over-feed. A calf should never be surfeited, and never be fed so highly that it cannot be fed more highly as it advances. The most important point is to keep it growing thriftily without getting too fat, if it is to be raised for the dairy.