From: Dennis
* Fleischmann's "boil off" cathode had Ce in it.... if memory serves. Another coincidence in the category of 'nothing new under the sun'. Just today I have been discussing an old paper: http://books.google.com/books?id=OvYtAAAAIAAJ <http://books.google.com/books?id=OvYtAAAAIAAJ&pg=PA656&lpg=PA656&dq=thorium +nitrate+thoria&source=bl&ots=NY1aiKWn3D&sig=4HGbPC7FMBEpGiQ7lwhocf-NQlk&hl= en&ei=yydcTc-eKsWt8AapwLT9DQ&sa=X&oi=book_result&ct=result&resnum=8&ved=0CE4 Q6AEwBw#v=onepage&q=thorium%20nitrate%20thoria&f=false> &pg=PA656&lpg=PA656&dq=thorium+nitrate+thoria&source=bl&ots=NY1aiKWn3D&sig=4 HGbPC7FMBEpGiQ7lwhocf-NQlk&hl=en&ei=yydcTc-eKsWt8AapwLT9DQ&sa=X&oi=book_resu lt&ct=result&resnum=8&ved=0CE4Q6AEwBw#v=onepage&q=thorium%20nitrate%20thoria &f=false . where in the old gas mantle lighting systems, the thoria mantles alone were ineffective, but 1% cerium maximized the light emission, and more than that was counterproductive. Fran Roarty will appreciate the mention on p. 656 of the "spongy" cells which form when the nitrate is oxidized. No doubt they are Casimir cavities. Jones
