Putten jr., P. van

7

J. Van Waveren, Haarlem

3

Newton & Co, London

2

Adam Steitz, Amsterdam

1

Breguet

1

English manufacture

1

F.A. Nobert

1

Froment, Paris

1

H. Meeuwig, Haarlem (1848-1935)

1

Heraeus, W.C. Hanau

1

J. Salleron, Paris

1

J.A.C. Oudemans en L.H. Siertsema

1

J.D. Moller, Holstein

1

J.F. van Deene, Amsterdam

1

J.H. Bourgogne, Paris

1

M. Hipp, Neuchatel, Suisse

1

M. Meyerstein, Göttingen

1

Metropolis Gas

1

Possibly W. Parker, London

1

Probably by Schroeder, Gotha

1

probably made in Haarlem

1

Ruhmkorff, Parijs

1

Salm, G.B. v/h Amsterdam

1

Siemens & Halske

1

Warmbrunn, Quilitz &Co, Berlin

1

Paper

49

Glass

24

brass

10

Wood

9

Mahogany

6

silk

4

Copper

3

velvet

3

lead

2

chamois

1

Deal

1

Hg

1

Iron

1

leather

1

porcelain

1

steel

1

tin

1

Tinplate

1

zinc

1

gasfotometrie apparaat

1

pluim

1

thermometer

1