This phrase seems grammatically speaking incorrect.
The Mosaic symbolism is very significant, because from it Freemasonry has derived and transmitted for its own uses many of the most precious treassures.
I think in any case it should be "for their own uses", it seems there is no number agreement and it should be such thing.
"Freemasonry" is singular, and "it" refers to this singular noun.
"For" is a preposition, and here it indicates a purpose. The purpose given is freemasonry's own uses. That is, the purpose of the Mosaic symbolism is for freemasonry's use, and not to benefit some other organisation.
No, the subject is “Freemasonry,” a singular noun, with a singular verb, “has,” and so “its” is grammatically consistent. In fact, there is no plural noun preceding “its.”
