If you have a friend able to translate, you should understand better my last post.
Sorry it's a raw pdf.
Unfortunately, a lot of Kervran's suggested transmutations would have ended up more complicated than he originally supposed.
e.g. The (suggested iron catalysed, if I remember correctly) N2 --> CO by single proton "shuffle" would decay, since you would end up with 13C (stable) and 15O (unstable). The oxygen atom would decay by positron emission (H/L 2 mins) to 15N (stable). So the end result would be CN (cyanide) rather than CO.
Of course, if a deuteron shuffled across....