113 



We supply three different forms of the chamber, viz: 



Price : Code-word : 



No. 209: For Stands I a and I b . , Mk. 70.. Pergolo. 



210: I c 7- Perico. 



211: II and IV 60. . Perifolio. 



A thermo-refjulator is supplied with the warm chamber but 

 the micro-burner is charged extra. 



No. 212: Micro-burner, Price: Mk. 4.50. Code-word: Perilustre. 



Fig. 65. 



L. PFEIFFEU'S 



Warm Chamber, No. 211. 



(V G Full Size.) 



We are also prepared to supply PFEIFFER's Heating Stage as constructed 

 by E. LEYBOLD'S successor, of Cologne. This stage consists of a glass box 

 made by the LEYBOLD sealing process, which may be directly used as an ob- 

 ject carrier. A thermometer and inlet and outlet tubes for heated water are 

 fitted at the side of the glass box. 



