issues from the lake was entered.  One of the boats was therefore sent round into the lake to await the return of the engineers dispatched to the meridian line.  The stores, which were all that could be brought up in the state of the waters, were now found to be wholly insufficient to allow of committing the party to the unexplored country between this stream and Tuladi.  Even the four days which must intervene before the return of the engineers could be expected would do much to exhaust them.  The commissioner therefore resolved to proceed across the country, with no other companion than two men, carrying ten days’ provisions.  It was hoped that four or five days might suffice for the purpose, but ten of great toil and difficulty were spent before Lake Tuladi was reached.  The remainder of the detachment, united by the return of the engineers, descended the north branch of the Grande Fourche to the junction of the south branch, ascended the latter, and made the portage to Green River.  In this the boats were completely worn out, and the last of their food exhausted just at the moment that supplies sent up the Green River to meet them arrived at their camp.

No arrangement which could have been made would have sufficed to prevent the risk of famine which was thus encountered by the second detachment.  A greater number of boats would have required more men, and these would have eaten all they could have carried.  No other actual suffering but great fatigue and anxiety were encountered; and it is now obvious that had the rains which were so abundant during the first week of October been snow (as they sometimes are in that climate) there would have been a risk of the detachment perishing.

The third detachment reached their station on Green River Mountain on the 13th September and continued there until the 12th October.  A full set of barometric observations was made, the latitude well determined by numerous altitudes, and the longitude approximately by some lunar observations.

The fourth detachment, after depositing the stores intended for the return of the party in charge of the British commissary at Fort Ingall, who politely undertook the care of them, ascended the Tuladi, and taking its northern branch reached Lake Abagusquash.  Here one of the engineers wounded himself severely and was rendered unfit for duty.  The commissary then proceeded a journey of five days toward the east, blazing a path and making signals to guide the second detachment.

The difference between the country as it actually exists and as represented on any maps prevented the commissioner from meeting this party.  It found the source of the central or main branch of Tuladi to the north of that of the Abagusquash, and following the height of land reached the deep and narrow valley of the Rimouski at the point where, on the British maps, that stream is represented as issuing from a ridge of mountains far north of the line offered to