He was speaking to Helm when Beverley came up.

M.
Roussillon followed close upon the Lieutenant's heels, as eager as he to know what the message amounted to; but Helm took the coureur aside, motioning Beverley to join them.

M.Roussillon included himself in the conference.
After all it was but the gossip of savages that Dutremble communicated; still the purport was startling in the extreme.

Governor Hamilton, so the story ran, had been organizing a large force; he was probably now on his way to the portage of the Wabash with a flotilla of batteaux, some companies of disciplined soldiers, artillery and a strong body of Indians.
Helm listened attentively to Dutremble's lively sketch, then cross-questioned him with laconic directness.
"Send Mr.Jazon to me," he said to M.Roussillon, as if speaking to a servant.
The master Frenchman went promptly, recognizing Captain Helm's right to command, and sympathizing With his unpleasant military predicament if the news should prove true.
Oncle Jazon came in a minute, his fiddle and bow clamped under his arm, to receive a verbal commission, which sent him with some scouts of his own choosing forthwith to the Wabash portage, or far enough to ascertain what the English commander was doing.
After the conference Beverley made haste to join Alice; but he found that she had gone home.
"One hell of a fix we'll be in if Hamilton comes down here with a good force," said Helm.
Beverley felt like retorting that a little forethought, zeal and preparation might have lessened the prospective gloom.

He had been troubled all the time about Helm's utter lack of military precaution.
True, there was very little material out of which that optimistic officer could have formed a body of resistance against the army probably at Hamilton's command; but Beverley was young, energetic, bellicose, and to him everything seemed possible; he believed in vigilance, discipline, activity, dash; he had a great faith in the efficacy of enthusiasm.
"We must organize these Frenchmen," he said; "they will make good fighters if we can once get them to act as a body.