Preface. 



m 



The present list forms the second portion of our Price List No. 50 published in the autumn 

 of 1909. The list here presented contains descriptions and prices of Physical Apparatus brought up 

 to date in accordance with the present state of instruction in Physics. 



We have spared neither cost nor trouble to render the arrangement of the list as comprehensive 

 as possible and to facilitate the selection of apparatus by means of suitable illustrations. The latter 

 are reproduced from photographs almost without exception and therefore give an exact idea of the 

 apparatus, as in making illustrations from drawings a certain amount of discretion is generally left 

 to the draughtsman. 



A carefully compiled index at the end of the list facilitates the selection of apparatus. 



In presenting this Price List to physicists and others interested, we would ask that frequent 

 use might be made of it and that the list itself might be kept for reference. 



It is always our endeavour to improve upon our apparatus and to make a thorough test of 

 all goods before despatch, with a view to giving complete satisfaction to our customers. The steady 

 increase in the output of our apparatus is proof that we are working in the right direction. 



In order to fill orders as rapidly as possible we hold a large stock of Physical Apparatus to 

 the value of 20000 25000, while the completeness and modern character of the equipment of 

 our works renders it possible for us to execute even the largest orders in the minimum of time. 



In order to shew the development of our 'works we append the following table shewing some 

 of the important points in its progress: 



We shall be glad to send a complete description of our factory and its equipment, in the 

 form of a pamphlet richly illustrated, gratis and post free to our clients. 



239197 



