SCIENCE-ADVERTISEMENTS 



IX 



"Sanitats" Porcelain! 



(Registered Name) ^ , 



from the Porceiain Works of ' '■' 



W. MLDENWANQER, SPANDAU near BERLIN 



can be obtained from all dealers in chemical apparatus 



Please take notice 

 " Blue Arrow" 



Y 



of my Trade-Mark 

 under the ename! 



FOR SALE 



Astronomical Telescope — 6 inch (Brashear) objecti-pe, 

 90 inch focus, with finder ; mounted on iron column having 

 fine adjustment in azimuth— circles reading by vernier to 1 

 minute, respectively, time and arc— Driving clock, with 

 governors, driven by Weights — Slow motion attachments in 

 both Right Ascension and Declination— Ten eye pieces, with 

 diagonal prisms for both star and solar observations. Price, 

 $575. Also Fauth micrometer with position circle, S175. 



STEPHEN LOINES, SI Wal Street, NEW ■» ORK 



Reichert Microscopes 



FOR AIiI, SCIENTIFIC RESBARCHBS 



(Medicine. Botany, Mineralogy, Metallurgy, ttc.) 



Microtomes 



Haemoglobinometers 



Mirror Condensers 



FOR ULTRAniCROSCOPICAL WORK. 



Apparatus for 



PHOTO-niCROQRAPHY 



and PROJECTION 



CATALOGUES FREE ON DEMAND 



C. REICHERT ^I'Stt VIENNA 8/2. 



Natural History 



Preparations, Collections 

 and Models 



of acknowledged first-rate style at very low 

 prices for Museums and Colleges 



Outfit and Completion of Natural History 



Cabinets. Own Preparation works 



Catalogues free of charge 



Dr. SchliJter's Natural Science 



Establishment 

 Halle on S. GERMANY 



PROVIDENT TEACHERS' AGENCY 

 120 Tremont Street BOSTON, MASS. 



We enroll and we recommend teachers and ofiBcera 

 for public and private schools, for norraal and tech- 

 nical schools, and for colleges and universities. 

 Vacancies now for iranaediate service and for 1914- 

 15. Director, JAMES feEE LOVE, formerly of 

 Harvard Faculty. 



ROMEIKE'S 



PRESS CLIPPINGS 



are now an absolute neces-jity 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 you 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. 



J06-J 10 Seventh Avenue Nev/ York City 



BUY SCIENCE APPARATUS 

 — Direct From Factory — ^ 



You eave money by buying Chapco Tested and 

 Guaranteed Laboratory Apparatus as we sell direct 

 Crom factory to school thu3 yoii escape alltheheavy 

 overhead charges and Belling expenses of those 

 who sell through travelers. Write for FREE 

 copy of latest Chapco Purchase Guide No. 11 

 and state your schoof connection. *1) 



Chicago Apparatus Co. 55 soiinfon st. Chicago 



