4 
HauscirfomL 
Microscopes 
FOR ALL REQUIREMENTS 
Also 
MICROTOMES, 
PHOTOMICROGRAPHIC APPARATUS, 
CENTRIFUGES, &c. 
Full particulars on application. 
Bausch & |omb Optical (p.|td. 
Contractors to British, Indian, Colonial and Foreign Governments, 
37-38 HATTON GARDEN, 
LONDON, E.C.l 
Our Instruments may be obtained through 
all Dealers. 
CABINETS and BOXES 
for MICROSCOPE SLIDES 
Yarious patterns. All sizes to hold from 1 doz. to 3,000. Reduced Prices. 
“MERSOL” (™ A R DR ) The Improved Immersion Oil 
“EUPARAL” Prof. Gilson’s latest process. A mounting medium 
of special qualities 
See Gatenby-Lee “ Microtomists ’ Vade Mecum,” 1921. 
GUARANTEED STAINS AND REAGENTS 
309 OXFORD Rd. (Opposite the University) 
MANCHESTER 
FLATTERS & CARNETT, Ltd. 
BOOKS^H 
W. & G. FOYLE Ltd., 121-125 Charing Cross Rd., London, W.C.2 
On Microscopy, Natural History* 
and all Scientific and Literary 
subjects, Second-Hand and 
New. Catalogues free. State 
wants. Books sent on approval. 
Books bought. 
RHEINBERG’S EYEPIECE MICROMETERS, STAGE MICROMETERS 
and other Graticules by the processes of 
GRAINLESS PHOTOGRAPHY and FILMLESS PHOTOGRAPHY 
FROM ALL LEADING OPTICAL FIRMS 
RHEINBERG & CO., 67/60 Holborn Viaduct, LONDON, E.C.l 
Stock list of standard articles on application. 
