_Prof. George C. Watson, Pennsylvania experiment station._--The experiment station has received many letters requesting information pertaining to the growth and cultivation of alfalfa. From these communications it has been learned that many farmers have attempted to grow alfalfa on land that is not at all well suited for this purpose, and consequently, many failures have resulted. The first attempts to grow alfalfa were made wholly by spring seeding, which, in most instances, has proved quite unsatisfactory. As alfalfa starts slowly and exists as a small plant for a considerable length of time, the weeds have an abundant opportunity to germinate and outgrow the more delicate alfalfa plants. Whatever conditions favor the growth of weeds, particularly in the early part of the growing season, materially increase the risk of failure with alfalfa. Largely on account of the weeds and grass, late in summer or fall seeding has been most satisfactory. While a drouth at this time may seriously interfere with germination, yet the injury from insufficient moisture is not likely to be so great as that from a rank growth of weeds earlier in the season. Land that has been cultivated for a few weeks during the summer may be sown to alfalfa in August or September with comparatively little danger from annual weeds, which are so troublesome in spring seeding. Land that is infested with noxious perennial weeds and grass would not, of course, be in suitable condition for seeding after a few weeks of cultivation, no matter how thorough it may be. The most tenacious grasses and weeds, like Canada thistles and quack grass, should be given at least a few months of thorough cultivation before seeding. Experiments indicate that alfalfa will not survive continued alternate freezing and thawing if the soil contains very much moisture. Land that is at all inclined to “heave” is not suited for the growth of this crop. The soil of the station farm, upon which most of these experiments have been made, is a porous limestone clay underlaid with limestone rocks which afford abundant drainage through the fissures. Notwithstanding the fact that the soil is naturally well drained, in some places it seems to hold too much water to afford a most congenial home for alfalfa. This crop will endure severe freezing, provided the soil is sufficiently dry so that it has no tendency to “heave.” Land upon which clover will “heave” undoubtedly contains too much moisture for alfalfa. It seems to be able to endure the rigors of winter better than clover, provided the moisture conditions are favorable. RHODE ISLAND