Negligible amounts of urea were excreted by fresh’ earthworms &urnbricus terrestris) ; however, on fasting, the quantity of urea in the excreta increased.notably (1). The oral administration of arginine was followed by an increased elimination of urea. The excretion of urea was also augmented, to a lesser extent, by the ingestion of citrulline with certain other amino acids. The data presented ...

Competition for the titles of best dressed students at Rice, to be awarded ^fran election next Wednesday morning, grew keen this week witnThe nomination of three more candidates for Best Dressed Boy, raising the total to six, and eight more nominations fbr Best Dressed Girl, making a total of nine candidates. Merchants of Houston contributed handsomely to make the prize list read like an invent...

In 1986, the Harvard Educational Review published Jim Cummins’s article “Empowering Minority Students: A Framework for Intervention,” which offered a theoretical framework for addressing the achievement gap of minority students. Despite considerable attention to this issue, educators have seen little encouraging progress. Even now, fifteen years after its original publication, Cummins’s article...

Transected axons are often assumed to seal at their cut ends by the formation of continuous membrane barriers that allow for the restoration of function in the axonal stumps. We have used several electrophysiological measures (membrane potential, input resistance, injury current density) and several morphological measures (phase-contrast, video-enhanced differential interference contrast, light...

In crustacean muscle, earthworm longitudinal muscle, leech longitudinal muscle and barnacle muscle the major role in the production of the action potential is played by divalent cations rather than sodium ions, which are believed to be most important in many other excitable cells (Fatt & Ginsborg, 1958; Fatt & Katz, 1953; Werman, McCann & Grundfest, 1961; Hagiwara, Chichibu & Naka, 1964; Hagiwa...