Logos and ethosas the sentence in quotes gets the mind thinking of what was the steam generation doing and what was it like
Logos means word, speech or reason. It is the use of reason and reasoning, whether inductive or deductive, to construct an argument. In persuasion, logos is the logical reasoning behind the speaker's statements. Logos refers to any attempt to appeal to the intellect, to logical arguments. In the case of the phrase "The Early History of the Generation and Use of Steam" the speaker the intellect to elaborate arguments that speak on the subject.