Florida Agricultural Experiment Stations samples analyzed was narrower than that recommended for growing dairy heifers by Morrison (12). The crude protein con- tent of pangolagrass samples was higher than that of bermuda- grass samples on the dry matter basis. Therefore, the ratio of dry matter to digestible crude protein in pangolagrass was nar- rower than that recommended for growing heifers. Improvement in quality of pangola forage increased weight gains during the grass season from 387 pounds per acre in 1952 to 579 pounds in 1954, even though the amounts of total digestible nutrients obtained from the pasture were almost identical for the 2 years. Body weight gains on Coastal bermuda- grass rose from 211 pounds in 1952 to 518 in 1955, although 278 pounds less of total digestible nutrients were obtained per acre during the latter grass season. Forty percent of the total gains were made during the clover grazing seasons, while this forage supplied only 30 percent of the total digestible nutrient intake. SUMMARY AND CONCLUSIONS Whiteclover-pangolagrass and whiteclover-Coastal bermuda- grass pastures grown on Scranton loamy fine sand were grazed intensively with separate groups of dairy heifers for 3 years. Whiteclover was the principal forage each year from beginning of grazing through May and grass supplied practically all of the forage after June 1. A comparison between the pastures was made during 2 years. Total digestible nutrients obtained per acre from the pastures during the 2 years averaged 7,019 pounds for whiteclover-pan- golagrass and 6,255 pounds for whiteclover-Coastal bermuda- grass. Most of this difference in yield occurred during the grass grazing season. Body weight gains per acre in 1952 averaged 625 pounds on whiteclover-pangolagrass and 434 pounds on whiteclover-Coastal bermudagrass. Most of this difference occurred during the grass grazing season and was due to the lower total digestible nutrient yield and slower growth made by the bermudagrass. The higher gain per acre in 1954 of 901 pounds by the animals on clover- pangolagrass as compared to 806 pounds by those on clover bermudagrass was due principally to the larger yield of total digestible nutrients obtained from the clover-pangolagrass pas- ture. Growth rates the latter year were the same on both pastures.