Discussion Polymorphic Behavior.-These glycerides show considerable uniformity within pairs, but various pairs differ from each other. SC3C3 behaves like the-diacetin pair. The five lower members show no beta prime form; the-dibutyrins show no forms melting higher than alpha. The-dicaproins apparently lack a true alpha form, sub-alpha existing up to the lowest metastable mp; both show beta prime, but the stearyl compound lacks beta, shown by the ...