NA TV RE 



[Septemiskr 14, 1905 



THE CAIFFE AUTO-MOTOR 

 MERCURY JET INTERRUPTER 



(Pa.tcntccl in Britain). 



NO BRUSHES, NO BANDS, NO INDEPENDENT MOTOR. 



The interruption cuts the current both for motor and coil. 

 In other words motor and interrupter .ire electrically and 

 mechanically linked together. 



ID*" See Navurf, July 20, 1905, pa^e 277. 



Price, including li ix and packing, £4 : 6 : 6 



THE MEDICAL SUPPLY 

 ASSOCIATION, 



IX'nil-ilitiri- <lreiil(ir iijinii 11 j,))! iciil ion. 



From the New Issue of VV. WATSON & SONS' No. 3 CATALOQUE, just published. Post Free on application. 



Tsetse Flies (G. palpalis), whole insect 



Disbections of all parts may be had mounted separately. AIsi 



tof 1 



Send for Special Desi 

 RIood-sucking Maggot (from the Con2o) 

 Fly hatched from above, Aiichinerontyia htteola 

 Section of Brazilian Quartz, showing cavities < 



Very interesting 

 Eggs of Emperor Moth, fertile and sterile, on i slid. 



ptive List. 



taining fluid. 



Perfume Glands on Leaf of Lavender 1 6 



Bugulaplumosa (Bird's Head coralline). Specially line mounts 2 6 



Karyokinesis in root of Water Lily 3/- & 4/- 



Leg of Flea, showing muscular siructure ... 1 6 



Set of 16 Slides illustrating the development of an Asridian 



(Aspersa). Incase 25 



Trypanosoma Brucei (Tsetse Fly dise.ase) ... 4 



Set of 5 Slides of the Garden Spider, showing different stages of 



growth. In Case 7 6 



SEND FOR THE ABOVE NEWLY PUBLISHED CATALOGUE OF MICRO. OBJECTS. 



lV-4rS0/V'5 CATALOGUE OF MICROSCOPES {158 pages) is of special interest to all Microscopists, 



post free. 



W. WATSON & SONS, 313 High Holborn, London, W.C. 



Branches-16 FORREST ROAD. EDINBURGH, and 2 EASY ROW, BIRMINGHAM. 



RECENTLY 

 REMODELLED. 



Represents K and L 



types, giving- 3*5 H.P. 



and 5 H.P 



respectively. 



Immediate Delivery 



for Stock Sizes 



of Engines. 



GREAT REDUCTION 

 GAS CONSUMED. 



Up to the end of 1904, 

 over 51,000 g-as and 

 oil engfines had been 



delivered, represent- 

 ing- about three- 

 quarters of a million 



actual horse-power. 



^1 DALLMEYER'S 



I ivi r» R, o "V E r> 



PRISMATIC 



BINOCULARS. 



"THE SERVICE." 



Will not get out of Adjustment. Easy to Clean. 

 Easy to Handle. Lightest Glass Made. 



Powers 4, 6, 8, lo, 12. 

 g*- Illu^lrnl,-<i J^ain/.htei_Post_Frec. 



J. H. DALLMEYER, LTD., 



25 NEWMAN ST., LONDON, W. 



Makers of the Celebrated Dallmeyer Lenses. 



et Hill, Queen Victoria Street, in the City of London, and piil.U-hed 

 i Company, 66 Kifth Avenue, New York.— THt;RSDAV, Septe 



