BAIRD &TATLOCK (LONDON) LTD. 



529 Buchner's Tubes, Size above constriction, 10 by ij-in., without inside tubes or I.R. corks 



each 6d. ; per doz. 059 



530 Bulloch's Tubes, total length, 8 by J-in., below constriction, 6 in. for sealing off permanent 



Cultures in formalin . . . . . . . . . . each 3d. ; per doz. 029 



531 Serpent Tubes, as designed by Dr. T. A. Starkey, for the isolation of Typhoid and Colon 



Bacilli from drinking waters, etc. . . . . . . . . . . each 016 



(See American Journal of the medical sciences, July, 1906.) 



532 Small Thermostat, for use in Widal's reaction with sterilised cultures, as devised by Prof. 



George Dreyer . . . . . . . . . . . . . . each 050 



(JSZP. Journal of Pathology and Bacteriology. Vol. XIII., 1909.) 



533 Typhoid Tubes for Widal's blood test .. .. .. per dcz., 3d. ; per gross 026 



534 



534 Typhoid Tubes for Widal's blood test, bent form 



per doz. 3|d. ; per gross 



DIRECTIONS FOR FILLING CAPSULES WITH BLOOD FOR SERUM DIAGNOSIS, 

 as arranged by Sir David Semple, Pasteur Institute, Kasauli. 



(1) Sterilise the finger with carbolic lotion and dry. 



(2) Sterilise the pricker in the flame of a match or spirit lamp. The best improvised pricker is a " J " 

 pen with one leg broken off. 



(3) Break ofi the tips of limbs (A) and (B) of the capsule. 



(4) Apply the point of the pricker to the pulp of the finger and drive in with a good sharp jerk : done in 

 this way the pain is very trifling. The prick should be a bold one, so as to get a free flow of blood. 



(5) Apply the end (B) to the drop of blood, keeping the bulb of the capsule below the prick in the finger ; 

 the flow of blood can be encouraged by wrapping a handkerchief tightly round the finger from base to tip. 



(6) When the bulb of the capsule is full, pass the limb (A) two or three times lightly through a flame, seal 

 (A) immediately ; the blood will then be withdrawn from the end (B), and that end can be sealed. It is useless ' 

 to try to seal the end (B), unless the blood has been withdrawn in the way mentioned. 



535 



535 Pasteur's Test Tubes, 6 by f in., with ground-on cap 



536 Pasteur's Flasks, with ground cap. 



Capacity . . . . . . . . 50 c.c. 



536 



Price 



lOd. 



9/6 per doz. 



per doz. 



100 c.c. 

 lid. each 

 10/6 per doz. 



CROSS STREET HATTCJN GARDETST, E- C 



