180 THE JOHOEE SURVEY. 



ordered from Messrs. Troiigliton & Simms and other well- 

 known English makers. The author concluded by urging 

 upon engineers the great advantages of the Everest (3-screw) 

 method of mounting instruments, of the use of micrometer 

 microscopes in the place of verniers, and of the shifting- 

 plate in addition to the usual mount, by which the work of 

 engineers was much expedited, especially in the case of 

 setting out railway curves where the pegs are placed among 

 the bottom ballast of the new line. The paper was illus- 

 trated by a good collection of surveying instruments, such 

 as tacheometers and theodolites, in addition to the collection 

 of snakes and other objects of natural history, of photo- 

 graphs and maps, and of samples of Malayan workmanship 

 exhibited upon the former occasion. A hearty vote of thanks 

 to the author closed the proceedings. 



