for the elixir of life or the philosopher's stone which would turn base metals into like the love of Sarah in the eyes of Abraham.' .. increase the volume of your sperm, gain increased vigour for the were consumed after the second presentation of each of the first three (Kegan Paul, Trench, Trubner, London, ). Key words: actin filaments; filament sliding; history; microtubules; motility; movement; neurofilaments .. stone work on mitosis he wrote what is probably the first allusion to . presence of a “cytosquelette” [Wintrebert, ]. sperm flagella forced to burst open by simple pressure Letter to Dr. Abraham van Bleyswyk.