Gentlemen, thank you very much for your inputs. I admit, it was not good idea to call the tubes “exhaust pipes”. I am still an ignorant if it comes to engines.
My question was referred to well known photo.
A tube protruding from starboard is clearly visible right under the machine gun. Unfortunately, I am not able to improve picture so as to identify the type of engine but it looks like 9 cylinder rotary "of some kind" rather than 7 cylinder 80 hp Gnome.
As for inlet pipes – I thought that there were no carburettors in rotary engines, in 1914.