It is probably the first violin, which is kind of soprano-alike - the highest of the female voices.
Line conventions............lines can only be thick or thin. Thick is 0.6mm and thin is 0.3mm.
Long before concrete made its appearance on the building scene in Rome, the Romans utilized a volcanic stone native to Italy called tufa to construct their buildings. Although tufa never went out of use, travertine began to be utilized in the late 2nd century B.C.E. because it was more durable.
From my understanding, limestone wears down by water (rain and snow). This could be bad if the limestone is outside in a rainy/snowy environment.
