330 Journal of the Asiatic Society of Bengal. [Aug.-Sept., 1913. 
A list of these officers and the dates during which they 
have held the post is given below :— 
J. Armstrong... -. 1875—79. 
GM. J. Giles -. 1884—88. 
James Wood Mason (offg.) .. 1888. 
A. Alcock a .. 1888—92. 
A. R.S Anderson -. 1892--19090. 
J. Wemyss Grant (offg.) .. 1896—97, 
A. F. McArdle .. .- 1900—02. 
A. C. MacGilchrist .. 1993—05. 
R. E. Lloyd BS, -. 1905—07. 
F. H. Stewart .. -. 1907—10. 
R. B. Seymour Sewell -- 1910—12 
T. L. Bomford (offg.) -. 1912—13 
__ The present R.I.M.S.S. ‘Investigator’? was built by 
Vickers Maxim & Co., in the year 1907, to replace the old 
survey and biological work. She is a single screw steamer, 
fitted with a triple expansion direct inverted engine, developing 
an indicated horse power of 1500. She has a length, over all, 
of 232 feet 6 in. and a beam of 33 feet, her gross tonnage is 
of six surveyi 
Naturalist and a crew of 110 
constructed that it would be impossible to us? a beam-trawl, 
and the present liboratory is merely a small cabin on the 
starboard side lighted only by the usual two portholes, nor are 
here any conveniences such a$ a swinging table or a constant 
» Such as surface tow-nets, which were 
: c S carpenter. Investigations regard- 
ing the salinity and temperature of the Sea-water have hitherto 
ny degree of accuracy, for the onl 
ents were an ordinary ection cule m ra plier 
egistering to the nearest degree Fahrenheit and a set of four 
hydrometer bulbs reading to the nearest degree: nor is the 
