The problem of producing large nwmbers of sections for teaching purposes and staining them by haematoxylin and eosin has become acute in.the post-war years, due to the shortage both of trained technicians and of reagents, especially ethyl alcohol. Methods previously used have suffered from the disadvantages of being too long, or wasteful of reagents, and it was with these factors in mind that t...

Wax formation in hydrocarbon fluids at low temperatures is one of the harassing problems faced by the petroleum industry. The prevention of wax formation, the production of diesels more resistant at low temperatures and the design of new and better additives requires a good understanding of the crystallisation behaviour of the paraffin molecules. Better experimental techniques to study the wax ...