No. 55 486. 



Water Gauge. Wind. Eddies. Storms. 



659 



52 056, 51 949. 1 : 9. 



55 484. 1 : 8. 



55 485. 1 : 10. 



55 486. 1 : 10. 



a small metal plate on which German tinder or the like is allowed to burn in order to fill the cylinder 

 with smoke. Air is then blown by means of a bellow through the upper pipe, cyclonic smoke eddies 

 thereupon ensuing. 



55,485. Eddy Apparatus after Collation, Figure, for producing eddies in a mass of water 

 similar to atmospheric eddy winds (Comptes Bendus, April, 1887) 



55,480. Storm Recorder after P. J. Schreiber, Figure 



This apparatus automatically shows storms within a radius of 20 km and records them on a 

 paper disc connected to a 24-hour clockwork arrangement. To the apparatus pertain the coherer, 

 together with shaking device, built into a well-closing chamber (the coherer, etc. serving 1 simultaneously as 

 an acoustic indicator); a sensitive relay and shunt resistance for a cell, together ivith ink writer in a 

 separate glass car. and three dry cells. 



In spite of its simplicity, the apparatus is very sensitive. The determination of the time of the 

 individual electrical discharges can be carried out with accuracy, as the pen describes a distance of 10 to 

 12 metres in 24 hours. 



Complete description is appended to the apparatus. 



s. d. 



6. 0. 

 9. 0. 



Cl. 66tf, 3434, 



5085,2012. 42* 



