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SUMMARY:
Travel from Tyangsi to LAGNABI (Rocha Valley) with notes on an alternate route to Tawang, oak and Pinus longifolia forest, abundant Lilium giganteum, bird collecting success, and presence of snakes but few leeches. The next day they camp east of the Thibi La at 11,389 ft; Ludlow and the diarist set off early as mist forms from cumulus clouds.

CONTENT:
everything ready and comfortable.

9th Sept. To LAGNABI (ROCHA VALLEY) 4 miles 8047'. (BP 198° Temp 75°). This valley lies to the east of Tyangsi, and comes down pretty well due east. The path is fairly good and seems to be used often. This route is said to be a way to Tawang if the other one fails. Ascent is steady but easy. The jungle is mostly oak, with a number of Pinus longifolia mixed among them. Near camp there are a great number of L. giganteum, but seeds and bulbs are not yet ready. This is a good place for birds. In a few hours we managed to get 3 Pnoepygas, 1 Tesia, 1 Sylviparus, 1 new Yuhina and two Grammatoptila. There are no leeches, or so few as not to worry us at all. But there are some snakes, as I found this afternoon. Lilium giganteum is very common here: there are 30-40 in fruit close to camp.

10th Sept. CAMP east of the Thibi La 11389' 9 miles. (BP of Dib La 189.7° Temp 73° BP of camp 192.2° Temp 56°) Rather a remarkable day in many ways. Ludlow and I started off early (6:15) ahead of the coolies, to have an undisturbed forest to walk through. It was fine, with large cumulus clouds about, which gradually came down and formed mist over the whole

CONTENT:
seems almost incredible that that should have been done after our instructions. Puibo hopes to retrieve it, and bring it on with him when he comes. He wrote from Dosum Zampa - 'the bridge of the three rivers'. Flies are very bad in this camp all through the day, and a tiny midge with a most annoying bite appears in the mornings and evenings. We have smoke fires lit round the camp to try to cope with them. The walking stick gun has been unable to keep up the uneven struggle. I have tried to patch it up, but the whole thing is made of soft metal and brass, which cannot stand up to the discharge of the cartridge and buckles. So it is being discarded. It is a great pity, because some such other weapon - we have one .22 rifle - is necessary in the thick jungle when after birds like Pnoepyga, Tesia, Neornis and Heteroxenicus. They are all inveterate skulkers, and if one sees them, it is only in the densest jungle at a range of a few yards.

4th September. Tobrang. Fine nearly the whole day, after a downpour during the night. It is very hot and oppressive when the sun shines, but certainly preferable to the rain. We spent, as usual, the

SUMMARY:
A steep climb from the Trashiyangsi valley up to the Dib La passed through oak, bamboo, and rhododendron, with 21 birds collected and the possibility of new species noted. After crossing the frontier pass with Tibet and proceeding along the ridge, a waterlogged camp was made beyond the pass amid torrential rain and severe midges.

CONTENT:
86

Trashiyangsi: valley. The sun was extraordinarily hot for this
Dib La 10 Sept height. The path lies straight up a ridge between
Lobelia erecta 954 two streams, crossing the southern one fairly soon.
The climb is very steep the whole way, through
dense forest, first oak, then bamboo, then
rhododendron. In the bamboo part, we found
birds in numbers & have shot 21. These include
a most interesting collection. It is quite possible
that three new species may come out of these.
For Pnoepyga & Tesia, a couple of miles W of the
Dib La is excellent. The climb continues very
steep indeed right up to the DIB LA at m

7. (Ht 13003) This is the frontier with Tibet.
   On the East side the path is along a ridge,
   mostly pretty easy, with occasional steep drops
   over difficult rocky ground. Camp is a clearing
   reached 2 m beyond the pass. It is the worst
   camp bar Pimi we have had for a long time.
   All the ground available is soaking wet. Ten
   minutes before the coolies arrived, torrential
   rain fell & further soaked the ground &
   everybody as well. However we all got in
   and are reasonably comfortable. The midges however
   are perfectly awful. They appear an hour before dusk, &