No abstract

TEE investigation of the absorption of lead by plants can be carried out quite simply by dipping them into a solution which contains a radioactive isotope of lead, and determining the radioactivity of the ash fromu various parts of

Es wurde mit Hilfe von Ra D als Indikator des Bleis die Löslichkeit des Bleichromats bei 25° zu 1.2 · 0−5 g des Bleisulfids bei 25° in reinem Wasser zu 3 · 0−4, in H2S gesättigtem Wasser zu 1.5 · 10−4 pro Liter bestimmt.

No abstract

The method usually applied in the determination of blood volume is that worked out by ROWNTREE and his colleagues (1929). The principle of the method is that a dyestuff is injected intravenously and its degree of dilution determined.2 As the dye only mixes with plasma, the volume of the plasma alone is thus measured. The relative volume of corpuscles and plasma is determined with the haematocrit. To arrive a t the blood volume the volume of the corpuscles is added t o that of the plasma.