Protoplasm, by William Seifriz ...

The Effect of Calcium and Other Ions on the Early Development of the Radicle of Cotton Seedlings

“…When adequate calcium was present these radicles remained healthy and grew rapidly. 5. In distilled water the radicles became unhealthy, and some breakdown was apparent in about four days.…”

Methods of Research on the Physical Properties of Protoplasm

“…The rate is proportional to a number of factors including the potential of the external field and the potential (the interfacial potential) of the particles. These factors are all taken care of in the HELMHOLTZ formula for cataphoretic migration (37). With as yet no convincing evidence to the contrary, it can be definitely stated that all living cells are negatively charged when suspended in a solution similar (in regard to salt concentration and pH) to that in which the cells normally live.…”

“…The problem is an important one and involves recent rheological theories on non-Newtonian fluids (37). Investigations on the viscosity of protoplasm are many and the bibliography extensive; these have been reviewed by WEBER (33) and others (25).…”

“…A recent commercial model is that of FITZ (8), manufactured by Bausch and Lomb. A new but as yet little known model is that of DE FONBRUNE (37). It promises greatly to facilitate microdissection technique.…”

“…Other methods are microdissection (24), magnetic properties (37), the fall of statoliths (37), plasmolysis (34), and Brownian movement (4). Misunderstandings which have arisen, and a convincing clarification of them, have recently been set forth by FRY (11); he employed the centrifuge method.…”