According to the comparative experiments of a German agriculturist, cows which as calves had been allowed to suck their dams from two to four weeks, brought calves which weighed only from thirty-five to forty-eight pounds; while others, which as calves had been allowed to suck from five to eight weeks, brought calves which weighed from sixty to eighty pounds. It is difficult to see how there can be so great a difference, if, indeed, there be any; but it may be worthy of careful observation and experiment, and as such it is stated here. The increased size of the calf would be due to the increased size to which the cow would attain; and if as a calf she were allowed to run in the pasture with her dam for four or five months, taking all the milk she wanted, she would doubtless be kept growing on in a thriving condition. But taking a calf from the cow at four or even eight weeks must check its growth to some extent; and this may be avoided by feeding liberally, and bringing up by hand. After the calf is fully weaned, there is nothing very peculiar in the general management. A young animal will require for the first few months--say up to the age of six months--an average of five or six pounds daily of good hay, or its equivalent. At the age of six months, it will require from four and a half to five pounds; and at the end of the year, from three and a half or four pounds of good hay, or its equivalent, for every one hundred pounds of its live weight; or, in other words, about three and a half or four per cent. of its live weight. At two years old, it will require three and a half, and some months later, three per cent. of its live weight daily in good hay, or its equivalent. Indian-corn fodder, either green or cured, forms an excellent and wholesome food at this age. The heifer should not be pampered, nor yet poorly fed or half starved, so as to receive a check in her growth. An abundant supply of good healthy dairy food and milk will do all that is necessary up to the time of her having her first calf--which should not ordinarily be till the age of three years, though some choose to allow them to come in at two, or a little over, on the ground that it early stimulates the secretion of milk, and that this will increase the milking propensity through life. This is undoubtedly the case, as a general rule; but greater injury is at the same time done by checking the growth, unless the heifer has been fed up to large size and full development from the start--in which case she may perhaps take the bull at fifteen or eighteen months without injury. Even if a heifer comes in at two years, it is generally deemed desirable to let her run barren for the following year, which will promote her growth and more perfect development.