RAIRD &TMTLOCK (LONDON) LTD. 



4507 4509 4510 4511 



4507 r Respirometer, as illustrated, with graduated limb, complete with measuring and reservoir 



186 



cylinders 



4509 1 Spun Aluminium Pots for holding plants for respiration experiments. Complete with 

 metal band for clamping the rubber stretched over pot. 



Diameter . . . . . . . . 3 4 5 m - 



Price . . . . . . . . 41- 5/- 6/6 each. 



4510 s Apparatus for demonstrating the relation between transpiration and absorption . . 05 



4511 1 Ganong's Potometer .. .. .. .. .. .. .. . . 14 6 



4512 4513 4514 4515 



4512 s Rubber Tape in rolls, very useful in botanical laboratories for making air-tight joints round 

 stems of plants, etc., width f in. . . . . . . . . per 2 oz. roll 



4513 s Adjustable Support for bell jar, with one solid base plate and one glass plate with hole in 

 centre to fit on metal sliding support, complete with bell jar 12 in. by 8 in. 



4514 s Root Manometer for demonstrating root pressure 

 4515 s Apparatus for experiments on root pressure 



030 



2 10 

 050 

 060 



CROSS STREET HATTO1ST GARDE1ST, E-C 



826 



