This insect is found in the Gulf States and as far north as New Jersey, and is probably only a large Southern form of the next species.
But even here the part played by heredity is probably only a fraction of that which it is popularly, and even professionally, believed to play.
But the overcoming of this difficulty is probably only a question of time.
The apparent increase of insanity of recent decades is probably only "on paper," due to better registration.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "probably only" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.