SCIENCE-ADVERTISEMENTS 



GLINOSTAT 



Universal-Motor Driven 



WE HAVE developed an instrument which has many special advantages over the previ- 

 ous types and embodies a rigidity and durability that cannot be secured from a clock mech- 

 anism instrument. 



This outfit consists of two essential parts. First, what is designated as the Master Clino- 

 stat, and, second, what may be designated as the Secondary Clinostat. 



The Master Clinostat consists of suitable reducing gears arranged so as to reduce motor 

 speed of about 500 R.P.IiI. down to approximately one revolution in about 15 minutes. Any 

 higher speed may be obtained. This speed is given to the shaft bearing the plate and suitable 

 adjustable clamps hold a flower pot of 3 or 4 inch size. The supporting plate may be adjusted 

 so that tlie plant may be rotated in either a vertical or horizontal direction, or in any intermedi- 

 ary direction. There is attached as a driving means a flexible shaft, which is arranged on one 

 end so that it may be inserted in the clutch of the motor rotator. It may also be attached to 

 any other rotator or to any motor. 



The Secondary Clinostat consists of a suitable base and reducing gear, and supporting 

 plates with clamp similar to the Master Clinostat, and the two shafts engage, and thus the 

 Master Clinostat drives the Secondary Clinostat. Any number of these Secondary Cliuostats 

 may be thus connected and any number of experiments carried on at the same time. Some of 

 these may be adjusted for rotation in a horizontal direction and some in a vertical direction. 

 The method of engaging the two shafts is such that there is no binding and it is not necessary 

 that they be exactly in alignment. 



The clamps for holding the flowerpots are very easily adjusted and will carry any size plant 

 that may be contained in a 4 inch flowerpot. 



The adjusting mechanism in changing from vertical to horizontal rotation is done by simply 

 operating a lever and is very easily operated. 



Each of these instruments is mounted on a heavy iron base, handsomely japanned, and all 

 parts are finished in black with nickel plated trimmings. It makes a very handsome appearance 

 and is an instrument which will be found a pleasure to work with and, at the same time, its 

 rigid construction insures it durability and guarantees the continued service tliat may be ex- 

 pected from this instrument 



Cat. No. 8349 Master Clinostat, as described above. Complete with fle.xible shaft, three clamps, without 

 flowerpot. 



Cat. No. 8349 A Secondary Clinostat, as described abo\c. Complete with three clamps, but without flowerpot. 



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A Sign of Quality 



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aUALlTY 



;iLS 



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A Mark of Service 



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W. M. WELCH SCIENTIFIC COMPANY 



Manufacturers, Importers and Exporters of 

 Scientific Apparatus and School Supplies 



1516 Orleans Street 



Chicago, m., U. S. A. 



