Great photos, thanks for posting!
B-29 bomb bay with napalm cluster bombs. The napalm incindiaries are the long bound cluster in the photo.
Each of the bound tubes held bags of napalm. When released the cluster covers popped off from a small charge. Descent was slowed by long streamers. Japanese reported the slow descent looking like silvery streamers reflecting the light of fires, a glittering rain. Foreign observers from Europe recalled them looking like Christmas tree tinsel.
On impact another small charge sent the napalm bags flying out to become fiery blobs that stuck to everything. Nothing could put the napalm fires out.