Speaking of some indecencies in conversation:

As it is impossible for such an irrational way of conversation to last long among a people that make any profession of religion, or show of modesty, if the country-gentlemen get into it, they will certainly be left in the lurch.

Spectator, Nº. 119.

The ambiguity vanishes in the following arrangement.

—— the country-gentlemen, if they get into it, will certainly be left in the lurch.

Speaking of a discovery in natural philosophy, that colour is not a quality of matter:

As this is a truth which has been proved incontestably by many modern philosophers, and is indeed one of the finest speculations in that science, if the English reader would see the notion explained at large, he may find it in the eighth chapter of the second book of Mr Locke’s essay on human understanding.

Spectator, Nº 413.

Better thus: