245 reported on the synthesis of linear but alsobranched polymers prepared by di-, tri-, and tetra-alkyne andazide monomers like the combination of tripropargylamine(B 3)and(dihydroxymethyl)(diazidomethyl)amine(A 2)(com-pare the general outline in Scheme 17).
When discussing mineral formations in caves, we often talk about stalactites and stalagmites. A stalactite is an icicle-shaped formation that hangs from the ceiling of a cave, and is produced by precipitation of minerals from water dripping through the cave ceiling. Most stalactites have pointed tips.
Stalactites have to hold on tight to the top of the cave; Stalactites hang from the ceiling like ladies' tights; Stalactite has a t in it, as in t for top Stalactite has a c in it, as in c for ceiling, and stalagmite has a g in it, as in g for ground