AbstractMost writers on mathematical subjects are aware that setting up mathematical papers or books in type calls for the services of compositors who are specialists in their trade but it is not so generally known that, although the setting up of ordinary letterpress has been done for many years now by means of a machine called a monotype, so saving much time and labour, it has only fairly recently become possible to set up mathematical work and formulae completely by machine. In many cases in mathematics it is possible to write a formula in several different ways but not all of these are suitable for machine setting and some would still need to be made up by hand, thus wasting time and money. It follows, therefore, that it would be an immense advantage if the writer on a mathematical subject knew something about how best to prepare his manuscript or typescript for the printer, to express his formulae, which in the absence of a suitable mathematical typewriter will have to be written in by hand, in a form that best suits the compositor and machine composition, and, finally, how best to correct his proofs. With a view to assisting authors in this respect, the printers of thisReviewhave brought out a most useful booklet, compiled by Mr. R. G. Hitchings and entitled“The Mathematician and the Printer: Hints on the Preparation of Mathematical and Technical Manuscripts”, which sells at 10s.6d. post free. The recommendations contained in the booklet comply for the most part with those of The London Mathematical Society as laid down in their publication“Notes on the Preparation of Mathematical Papers”and on those contained in the British Standards Publication BS.1991.