THE OOLOGIST 
THE MAPLEWOOD 
Biological Laboratory 
Offers a New Preparation Showing the 
Anatomy of an Eighteen Day Old Em- 
bryo of the Common Chicken in 
Four Preparations 
No. 1, Cross sections through the head show- 
ing the head cavity containing brain, eye, ete. 
No. 2, The digestive organs entire. 
No. 3, The tongue. 
No. 4, The feet and legs. 
The specimens within the jar are attach- 
ed toa transparent glass plate, thus a 
rear as well as a front view is afforded. 
Mounted in 13 inch glass cylinders with 
heavy base. Price per jar containing 
the four preparations as described above 
$8.50 Delivered 
P. G. HOWES 
The Maplewood Biological Labor. tory 
Stamford, Conn. 
