TUTTLE ENGINEERING NOTES ON HAWAII. 149 



being so conducted as to make it extremely valuable to all landed 

 interests and the basis of all conveyances. 



Surveying in these islands is sometimes attended with features which 

 are pleasant, and sometimes with privations and danger to life and limb. 

 In this work almost impassable gulches and dense jungles of swamp- 

 land were penetrated, continued observations were made at the highest 

 summits, where the intense cold was peculiarly trying after prolonged 

 residence in a tropical climate, and the volcano of Kilauea was 

 mapped under conditions far from inviting. There is given a modest 

 account of the method used to occupy the triangulation station at 

 Diamond Head, in a report of 1889, by Professor W. D. Alexander, 

 who was Surveyor-General from the inception of the work up to 

 within a recent time, in which he says that "the instruments were 

 carried up the precipice on the inner ' makai ' side of the crater in the 

 following manner: An iron stake was driven into the rock at the top 

 of the precipice, to which a pulley was attached with 40 fathoms of 

 whale line. Two men then drew up the instrument boxes, one at a 

 time, while two others climbed up with the boxes, and kept them from 

 touching the rocks anywhere during the ascent." 



The results of this work are easily accessible to all to whom it is of 

 use, and that the skeleton work has been thoroughly done is evident 

 by the fact that it is difficult to find a locality which is not within easy 

 ivii/.'h of a permanent monument where azimuth, altitude, and co-ordi- 

 nates can be readily determined. 



The work furthermore shows a conscientious care and accuracy 

 which could only have been achieved by a body of competent 

 men devoted both to the land of their adoption and to our own 

 profession. 



