If any holder of new three per cent. stock is not within the United Kingdom at any time between the twelfth day of March one thousand eight hundred and eighty-eight and the twenty-ninth day of March in the same year, both days inclusive, his dissent may be signified at any time on or before the earliest of the following days, namely, the tenth day after his return to the United Kingdom, or the first day of May one thousand eight hundred, and eighty-eight, or, if between the said twelfth day of March and the said first day of May he was not within any part of Europe, the first day of September one thousand eight hundred and eighty-eight.