Introductory Remarks. Literature, Abbreviations. Ill 



Introductory Remarks. 



We have pleasure in placing before our friends this first volume of our most recent price 

 list. It contains, in a considerably enlarged form, the chapters on Fittings for Class Rooms, Ex- 

 perimental Switchboards, Gas Generating Plant for gasoline gas, Internal Combustion Engines for 

 Gas and Liquid Fuels, Electric Transformers, Direct Current Dynamos, and Projection Apparatus 

 with Accessories. The enlargement of the list, which* covers twice the amount of space as hitherto, 

 plainly shows the considerable increase of our selection in the various types. Hand in hand with this 

 increase in the size of the catalogue, our factory equipment has been correspondingly enlarged, and 

 our facilities for supplying the apparatus listed have been increased. 



We possess an excellently equipped and recently extended plant, fitted with the most up- 

 to-date mechanical arrangements and we have our own electricity works. Our staff of officials and 

 workmen are men of very wide experience. 



For the manufacture of Lttings for physics and chemistry lecture rooms and laboratories 

 our speciality now for the last 25 years our workshops have large rooms for drying wood by 

 steam heating and a machine cabinet shop fitted with all auxiliary wood-working machines. With 

 the aid of this equipment, backed up by a large stock of all the kinds of wood entering into the 

 manufacture of the various articles we supply, we are able to meet the largest orders in the least 

 possible time. 



^ The largest institutions in Germany, Austria, Russia, Belgium, etc. have allowed us to supply 



their fittings from our designs and have acknowledged to us the quab'ty and practical nature of the 

 construction. The great strides which our works have made is ample proof of the satisfaction afforded 



j to our clients. We hope in the future to enjoy the same confidence and good-will as in the past, and 

 it will be oui firm endeavour to continue to justify this. 



<j In view of the great trouble and expense attendant on the production of a catalogue like 



the present, we would respectfully request that it be carefully preserved. 



Max Kohl A. 6. 



Literature 



together with abbreviations employed. 



Friek, Phvs. T. = Dr. J. Frick's work entitled ,,Physikalische Technik" by Dr. O. Lehmann, 7"> Edition, Braunschweig, 

 1904, Friedr. Vieweg & Sohn. 



M. T. = Friedr. C. G. M filler, ,,Technik des physikalischen Unterrichts nebst Einfuhrung in die Chemie. Otto Salle, 

 Berlin, 1906. 



W D. = Ad. F. Weinhold, ,,Physikalische Demonstrationen", 4 'h Edition, Leipzig, 1905, Job. Ambr. Barth, formerly 

 Quandt &. Handel. The references to the 3rd edition are enclosed in square brackets when these re- 

 ferences differ from those contained in the 4'h edition. 



7. i. d. phys u. chem. U. = Zeitschrift fiir den physikalischen und cbemisr.hen Unterricht, edited by Prof. Poske. 

 published by Julius Springer, Berlin. 



239196 



