Bizarre horn glissandi in Stokowski's Fantasia re-arrangement of Le Sacre?

From Rehearsal 73 to 79 L.S. did use all 8 horns to play the ascending arpeggios written by Stravinsky, which were in the original written only in Horns 4,6,8, and all played "Bells in the Air." Then all horns double the triplet figures and play them marked "asi cuivrez" - very bry - with the Bells still up!