After scanning for a few minutes, I was amazed at how readable the book is given its age and my experience with books of similar age. The book also does appear

After scanning for a few minutes, I was amazed at how readable the book is given its age and my experience with books of similar age. The book also does appear to go out of its way to keep language simple. For example: We call the ratio dx/dy "the differential coefficient of y with respect to x." It is a solemn scientific name for this very simple thing. But we are not going to be frightened by solemn names, when the things themselves are so easy. Instead of being frieghtened we will simply pronounce a brief curse on the stupidity of giving long crack-jaw names; and, having relieved our minds, will go on to the simple thing itself, namely the ration dx/dy.