The nodding seems to me the only credible way of achieving the kind of deviations that would be needed on many first half 19th century flutes. Indeed we have historical recognition that it was necessary then. Cornelius Ward released his “The Flute Explained” in 1844, to promote his new Patent Flute. He talks about the ordinary flute and what you have to do to play it in tune in his section on the bore. I can only imagine that Rudall & Rose are the Quack Vendors in the first paragraph. Note that the contentious word “forcing” also occurs in two forms in the paragraphs below …
"The bore of the ordinary flute is made larger in this country than it should be for a flute properly constructed; because, from the enlarged capacity, and the necessarily increased force of blast, some of the cross-fingered notes become a very little better. The quack vendors of these instruments mystify the pretended effects of what they term chambering the bore, to convert to the best account their deficient skill, or their want of proper implements; as well as to cover a large amount of ignorance and pretension.
Akin to this mystification, is the course pursued in many instruction books. We have not seen one which candidly informs the learner of the manoeuvres required to play the ordinary flute in tune. They give a vast variety of modes of fingering the same notes; with the object, one might suppose, of perplexing the scholar, or of showing the author’s ingenuity. Their silence on the one hand, and their profuse loquacity on the other, furnish strong evidence of their having (in the old flute) a bad case to deal with, requiring a large amount of special pleading, and a studious concealment of the important truths.
The authors of these books do not tell the student that the intonation of the instrument rests entirely with the performer, and depends upon certain zig-zag manoeuvrings of his lip, and other subterfuges. They do not point out which notes require the flattening or sharpening, the forcing or tempering process. Oh, no! the flutes they recommend are, doubtless, well in tune: the student is to blame if he cannot play in tune; and he must take expensive lessons to learn, not how to tutor his own ear, but to correct the false intonation of the instrument.
The good old Quantz was more honest and candid. He gives full, clear, and true directions for correcting as far as possible the bad notes, which he considers and terms the natural defects * of the instrument. And he states that unless the player can use his lips and chin with dexterity, under the guidance of a good ear, he can never become a musician on the flute. Quantz was evidently not interested in puffing [promoting] any particular sort of flute; although he gives a true account of an improvement of his own. His remarks upon the method of playing in tune, and indeed upon all other matters concerning the instrument in relation to the performer, contain more sound information, and in a better form, than any modern work on the subject, although he wrote one hundred years ago.
- Natural effects, we should rather say, of erroneous construction. Our flute demonstrates that such defects are neither natural nor necessary when the necessary natural laws are not contravened."
Heady stuff, eh? Ward was renowned for not holding back. But I think it confirms that, even in his day, just before Siccama and Boehm were to release their new models, it was still necessary to employ “zig-zag manoevres” and “other subterfuges” to get the flute into tune, even at the pitch it was designed for. So, no wonder we have to work when we play at another pitch.
Indeed, the deviations on the early 19th century flutes are probably greater than the deviations on a well-made baroque flute. My personal reading is that they had introduced some serious problems when they extended the foot from short D (as in a 4 key) down to C (for the 8-key). Richard Potter choosing to go with his longest corps de rechange when he switched to the tuning slide was a bizarre choice whcih left the flute too long-scaled. Nicholson’s Improvements opening up some holes but not shortening the foot compounded these problems. Those Quack Vendors Rudall and Rose stuffed about with chambering to try to minimise the problems but it wasn’t until we got to Siccama that anyone had a radical rethink of the problem.
No, I can’t say that with certainty, yet. Ward might have. He certainly had the understandings as you can tell from the above. He had the background - a successful flute maker for many years. Unfortunately the only Ward Patent flutes I’ve located are in museums and unplayable, so I can’t put his product to the test.
The rest of Ward can be found at:
http://www.mcgee-flutes.com/Ward.htm
Terry