Speaking of Latin prepositions

Google Books has Samuel Butler's 1823 Praxis on Latin Prepositions, and the Key that he provided only upon application by mail in order to keep it out of the hands of students. Our Dr Butler is grandfather of the novelist Samuel Butler.

Latin prepositions illustrated

Finally, something that makes sense of the mess:

An 1892 primer of Ecclesiastical Latin

The Mantrina, at the Internet Archive.  I stumbled upon it while googling fruitlessly for Fr Hunwicke's The English Missal.