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_ The machine except where otherwise specified is made of one-inch 
b Pine, surfaced both sides. 
_ Base 114 X 22 inches. It- is composed of a board fastened with 
B to two pieces of 2 X 4 set flush with the sides. Two uprights 
tq inches with upper ends rounded aré notched into opposite sides of 
vase and firmly fastened with three screws each. A 4 inch hole is 
ein the center and three inches down from the top of each upright. 
a these holes the rod 4 X 12 inches long on which the table swings 

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A board 49% X 9% inches is used for the table. This just fits be- 
a the two uprights. It is fastened with screws to two 2X 4 X 3 inch | 
mS, through the center of which the above mentioned $ inch rod passes. 
bloeks are fastened at such a point that the lower end of the table 
Swing clear of the base. A wing nut on the rod is used to bind the 
Bhts ageinst the two blocks and sides of the table. The table can 
be set at any desired angle. 
_ The camera is attached by a tripod screw to the upper end of the 
®. An object stand is constructed which is bolted on at the desired 
SS. Use bolts with wing nuts. The points of attaching the stand 
€rmining by focusing the camers and adjusting the position of the 
mo until the object appears one-half natural size or larger. Holes 
the bolts are bored in the table and labeled. 
_ Avery satisfactory stand is made of a piece of plate glass set | 
| frame which is braced by angle pieces on a board which in turn bolts 
mé table. The glass removes shadows and the packground may be made 
esired. . | 
e For photomicrographs a stand just large enough for the microscope 
polted at the desired point. In adjusting this for use with the camera 
the bellows should not be much extended, the table should be in a 
teal position and a cork made to fit into the end of the lens frame 
Over the ocuilar of the microscope. This excludes the outside light, 
Wing the light from the microscope to pass through a hole bored in 
Center of the cork and protects the lens of the camera from possible 
iy. 
_ this’ machine could easily be modified so that the object stands 
ad slide up and down, _It was maie during odd times and the material 
W. B. PARKER. 
