Strange typographical shortcuts

I have a problem with the following printed text in Latin:
http://books.google.pl/books?id=Z5w_AAAAcAAJ&hl=pl&pg=PP19#v=onepage&q&f=false
There are some strange looking words which I cannot find in any dictionary. What they have in common is that they all end with something similar to `q;` (the small letter Q followed by a semicolon), and that without this suffix they seem to be correct words. But why are they there then?

They don't seem to be any printing error or something, but seem to be there on purpose, because they repeat frequently and they have always the same form. Also, these semicolons don't seem to be logical in these places of the sentences.

Some examples of these words are: usq; ipsamq; aliaq; aliquousq;

It looks like shortcut or typographic convention from these times.
I tried to interpret them as `qi` or `qui`, but it doesn't work either.

Does anyone has any idea what could it mean?