2 BULLETIN 186, UNITED STATES NATIONAL MUSEUM 



for the North. The collecting localities and dates that concern us 

 here are as follows : 



January 27-29, 1912, Khao Phlung. 



January 31, 1912, Ban Huai Horn, Den Chai. 



February 1-5, 1912, Den Chai. 



February 6-7, 1912, Ban Huai Horn. 



February 8-9, 1912, Den Chai. 



February 10, 1912, Den Chai, Mae Raem. 



February 11, 1912, Den Chai, Ban Huai Horn. 



February 12-13, 1912, Ban Huai Horn. 



February 14-15, 1912, Den Chai. 



February 16-20, 1912, Pak Pan. 



February 21, 1912, Pak Pan, Den Chai. 



February 22-25, 1912, Ban Huai Horn. 



February 26, 1912, Mae Yom river near Phrae. 



February 27, 1912, Mae Tom river near Phrae, Mae Raem. 



February 28-29, 1912, Phrae. 



March 1-3, 1912, Phrae. 



March 7-11, 1912, Mae Raem. 



March 18, 1912, Pak Pan. 



March 19-23, 1912, "Vang Nun." 



March 25-26, 1912, Ban Huai Horn. 



Departing from Ban Huai Horn on March 27, Gyldenstolpe visited 

 Tha Lo near Phitsanulok and then went on to southeastern Thailand 

 and the shores of the Inner Gulf of Siam. On May 9 he left Thai- 

 land for Europe, taking with him his collections to be deposited in 

 the Royal Natural History Museum in Stockholm. 



In mid-February 1914, Gyldenstolpe arrived at Bangkok to under- 

 take his second and more important expedition to Thailand. After 

 a stay of some weeks in the capital, he made the two-day trip to the 

 railhead of the Northern Line at Pak Mae Ta, reaching this point on 

 March 11. After a few days he removed to Pha Kho, the residence 

 of a divisional engineer, where he spent almost a month. On April 18 

 he set out for Khun Tan, the residence of the engineer Eisenhofer 

 (discussed in the following pages), who was in charge of construction 

 of the Khun Tan tunnel. With Khun Tan as his headquarters, he 

 worked out in all directions until the middle of June, at which time 

 he moved on to Chiang Mai to make arrangements for a trip to the 

 more northern districts. On June 21 he left Chiang Mai for Doi Pha 

 Sakaeng, where he passed several weeks at a forest bungalow of the 

 Borneo Company Limited. Near the end of July he made a difficult 

 crossing of the mountains to Chiang Rai ; the conditions of travel in 

 the rains and an outbreak of anthrax among his pack ponies caused 

 great hardship to the party. Spending a week at Chiang Rai, he left 

 on August 8 to travel by boat down the Mae Kok to Chiang Saen Kao ; 

 thence, after a week, he returned on foot to Chiang Rai. During his 

 absence the rest of his ponies had succumbed to disease, and it was 



