INTRODUCTION. 13 



Dr. Robert Muencke, Berlin. 

 Dr. Hermann Eobrbeck, Berlin. 

 Klonne & Miiller, Berlin. 



Fob Miceobc(?pical Appliances. 



Stanley, Railway Approach, London Bridge, S.E. 



R. & J. Beck, 68, Cornbill, London, B.C. 



Theodor Scbroter, Leipzig. 



Alt, Bberbardt & Jager, Ilmenau, Thiiringia. 



Heinricb Booker, Wetzlar. 



R. Jung, Heidelberg. 



Klonne & Miiller, Berlin. 



Dr. Gr. Scbreiber, Chemnitz i. S. 



Dr. Bender & Hobein, Miinich. 



Marpmann & Schurig, Leipzig. 



Adolph Veit, Heidelberg. 



Fritz Fischer & Rower, Stiitzei'bach, Thiiringia. 



Foe Chemical and Staining Reagents. 



Baird & Tatlock, 14, Cross St., Hatton Garden, 

 London, B.C. 



Hopkin & Williams, 16, Cross St., Hatton Garden, 

 London, B.C. 



Townson & Mercer^ 89, Bishopsgate St. Within, 

 London, E.G. 



B. Merck, Darmstadt. 



