Alphabetical Name and Subject-matter Index. 



1129 



WollastOn, t'l.yonliorous . 

 Ilypsomeler .... 

 Pi-ism 



'4 goniometer 



Wolpert. Air tester 



Page. 



(HIS 



662 

 509 



4S1 

 856 



Woltman, Mill :!.v> 



'Vater mi'ter 355 



Wommelsdorf, Influence machine S22 



Wood liars, which sound . . . 4.'jl! 



blocks, parallclepipedic . . 2O(i 



- cone with brass tube . . . lili'.l 



- with pins 284 



cylinder with paper .surface ~l',i 

 frame, hook and wire for melt- 



linl 



- stretched with cardboard m>2 



- with ring loud 



models of crystals .... Iniis 

 prism wit h Huygheuian cons- 

 truct ions 563 



- protract .or 229 



pyramid with brass tube . liHil 



- rod 2iit 



scales with T-.-haped cross- 

 section 894 



- slabs, cut with and aciu-.- 



the grain 596 



stand for measuring instru- 

 ments 908 



- for I'uliij's apparatus . 286 

 for vacinini tube . . . 1023 



supports 206 



wedges . ... . 206 



Wood's Metal 601 



Wood, Phase reversing plate . 549 



Wooll, Slide valve cylinder . . 632 



Page 

 Work and heat 626637, 591, 597 



- bench sec vol. I. 

 Working of the telephone . . . 1054 



Work rail 252 



Workshop equipment see vol. I. 

 Work stand, physical . . . 201, 202 



Worm, and wheel 323 



-earing .... 313, 323, 324 



Woulff's Flasks 219 



Wright, Gypsum and mica com- 

 bination 565 



W -shaped decomposition cell . 944 

 Wunder, Thermocouple .... 1064 



X 



X-ray equipments for medical use 

 -ee special list. 



- induction coils . . . .978 981 



X-ray negatives 1074 



X-ray tubes 985 



- tubes for evacuation by one's 



self 1016 



school experiments . 1(573, 1074 



Yaru-assorters see special list. 

 - for connecting apparatus 



803 



Yarn-\viridlcs see special list. 

 Young, Modulus 308 



Zahlbruckner, Declination and in- 



clination 7S!I 



- Liquid's pressure 340 



- Monocliord 441 



Zamboni, Pile . . . 809, 810, S4o 



- Pile with protecting neck .10211 



Zeeman-Kttect 507, .",o'.i 



Zehnder, Battery of accumulators 856 



discharge tube 1043 



- Primary and secondary con- 



ductor 1042, 1043 



Zeiss, < (ptical apparatus for string 



galvanometer 892 



-Telescopes 543 



Zenith prism for telescopes . . 543 



Zickler, Tube 1053 



Zinc condensor plate 803 



- -copper cell 845, 847 



- disc, amalgamated .... 1026 



- plate 839 



- amalgamated 813 



for wire coil . . . 962, 967 



- plate, spare 852 



sulphide screen 1027 



Zirconium plate 617 



Zollner, Double radiometer . . 1021 

 Zwick, Lens apparatus .... 496 



- Myopia and presbyopia . . 523 



- Optical apparatus .... 496 

 Voltameter . 941 



The pages 1201 1240 are bound in voL I. 



