cr 



BAIRD &TATLOCK (LOM)ON) LTD. 



J-i 



674 

 674 T Insect Cases, corked and prepared, suitable for exhibition purposes, with camphor cells and 



glass framed top in mahogany. 



10 by 8 in. 13 by 9 in. 14 by 10 in. 16 by 10 in. 16 by 12 in. 18 by 14 in. 

 3/6 5/- 5/6 6/- 7/- 8/- each. 



DOULTON'S GERM-PROOF FILTERS. 



675A 675s 675c 676 



MEDICAL TESTIMONY FROM EMINENT BACTERIOLOGISTS, WHO REPORT THUS : 



" From exhaustive experiments which have been made it is clearly demonstrated that Doulton's White 

 Filter Tube is equal in every respect to any filter in the market at the present time. It has, in fact, been tested 

 against that tube which, up to the present, has been admittedly the best, and, in not a few experiments, it excelled 

 this well-known filter both in regard to rate of filtration and in its power to keep back minute liying mobile 

 microbes. We have submitted the White Filter Tube to severe tests, and it is in all respects most satisfactory. 

 In short, after a series of tests, the conclusion come to is that the Doulton Porcelain Tube prevents the direct 

 transmission of microbes both from water and from highly nutrient liquid media, such as peptone bouillon and 

 peptone water." 



675 T A, B, or C, Filter Tubes, 8 by i in. .*. .. .. .. .. each 



676 T Filter Tubes, 3 by i in. 



3 

 1 



677 1 



A 677 C 



Doulton's Bacteriological Filters, illustrations are half size. 



A. B. C. 



Price 2/6 2/- 4/- 



each. 



-CROSS STREET- HATTCTN GARDEKT,' E- C 



138 



