10 BROUWER and WING EASTON 



number should be written down in the note-book at the exact place 

 of origin. 



4. When measurings have been carried out they should be delineated 

 on a large scale the very same day, and the necessary mathematical 

 reductions should be worked out immediately. 



In this way eventual errors, omissions or indistinct notations 

 make their appearance and may often be corrected at once or the 

 next day. If a certain number of drawings regarding the same 

 district is completed, they should be reduced to the desired scale 

 and compiled into a real map as soon as possible, at any rate 

 before the district is left. 



5. In case of transport by water originals and duplicates of 

 samples and notes should go into two different vessels, the two 

 most reliable. If there are maps in simple which must not be lost, 

 they should be packed in a tightly closed zinc tube, which can be 

 carried on a tape or string, and should be hung round one's own 

 neck on somewhat dangerous spots. The tuwan (gentleman) is al- 

 ways the object of the greatest care. 



6. Neither should originals and duplicates be carried by the 

 same person during transports by land. The complaint is sometimes 

 heard that the porters throw off parts of their loads. When this is 

 not the consequence of too heavy loads, it can only be prevented 

 by the author's method of packing the samples in strong canvas 

 bags which, when filled, weigh V 2 or Va man ' 8 load, and which 

 are closed with a string and a lead seal. On the outside the bags 

 should bear a clearly visible number. A porter will only very excep- 

 tionally dare to throw away a whole bag, even less break a seal. 



3. OUTFIT. 



The question of the private outfit is considered here only. The 

 scientific one is left to the explorer. 



1. Clothes. The traveller may choose between suits (trousers and 

 coat buttoned up to the throat) of white or khaki drill. The former 

 are without doubt cooler to wear, but they soon get dingy. It is 

 recommended to have the coats made with spacious pleated pockets. 

 The second author always wore flannel undershirts in the Indies 

 and after a quarter of a century's jungle-work never had a bit of 

 rhumatism. If the traveller does not like wearing flannel, he should 

 be careful not to catch a cold. 



2. Shoes. The ordinary canvas shoes, though very convenient, 

 are not recommendable for long journeys on foot; walking in streams, 



