SCIENCE-ADVERTISEMENTS 



Reichert Microscopes 



POS AIiT, SCIENTIFIC RESEARCHES 



(Medioioe, Botany, Mineralogy, Metallurgy, etc.) 



Microtomes 



Haemoglobinometers 



Mirror Condensers 



FOR ULTRAHICROSCOPICAL WORK. 



Apparatus for 



PHOTO-niCROQRAPHY 



and PROJECTION 



CATAtOGVES FREE ON DEMAND 



G. REICHERT %l^^t VIENNA 8/2. 



Siemens & Halske 



Repair Shop 



Testing, Calibrating and Repair 

 of Electrical Apparatus and O 

 Instruments 



Building; and Desigfning; of Special 



Apparatus for Scientific Investi- 



g^ation and Experiments 



New York City 90 West Street 



ROMEKE'S 



PRESS CLIPPINGS 



are now an absolnte necessity for every scientific man. 

 By methodical searching through the most important 

 papers and periodicals published in this country and 

 abroad we are able to supply yon at short notice with 

 information on any subject which perhaps you would 

 be unable to find yourself in libraries or reference 

 books after spending days or even weeks at such a 

 task. Write for further information. 



HENRY ROMEIKE, Inc. 



106-J 10 Seventh Avenue New York City 



Natural History 



Preparations, Collections 

 and Models 



of acknowledged firBt-rate style at very low 



prices for Museums and Colleges 



Outfit and Completion of Natural History 



Cabinets. Own Preparation works 



Catalogues free of charge 



Science 



Dr. Schluter's Natural 

 Establishment 



Halle on S. 



GERMANY 



Sanltats" Porcelain! 



(Registered Name) 

 from the Porcelain Works of 



W. HALDENWANGER, SPANDAU near BERLIN 



can be obtained from all dealers in chemical apparatus 



Please take notice 

 " Blue Arrow" 



i 



of my Trade-Mark 

 under the enamel 



