In Expressions^x, Abbreviations^x, Tenses^x

SHALL AND WILL IT is unfortunate that the idiomatic use, while it comes by nature to southern Englishmen (who will find most of this section superfluous), is so complicated that those who are not to the manner born can hardly acquire it; and for them the section is in danger of...

This is my version which agrees with your points, Kajjo. To (in order to) increase the octane number, the following lead compounds are added to the petrol for motor vehicle and airplane engines: tetraethyl lead (TEL) and tetramethyl lead (TML), in a solution of so called ethyl liquid (the...