IV THE OOLOGIST 



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4» READY JUNE 30. 1910 A 



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I EMBRYOLOGICAL | 



I DEVELOPMENTS I 



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Beautifully mounted in the finest ^ 



1 Crystal Museum Jars. Neatly labeled 1 



<& and hermetically sealed. Showing the ♦!♦ 



^C development of a Praecocial Bird (Gal- X 



*^ lus Domesticus). Embryos are removed ♦!♦ 





♦!♦ 



from the ed^s and mounted on trans- 1 



parent ^lass slips. ^<» 



Order now. Price S8.00 each. A^ 



Seven stages in each preparation. x 



I P.G.HOWES, I 



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y The Maplewood Biological Laboratory <?♦ 



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♦j* Stamford, Conn. ♦J* 



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