J/ he 



im 



Bulletin of the Museum of Comparative Zoology 

 AT HARVARD COLLEGE. 



Vol. XXII. No. 3. 



AMITOSIS IN THE EMBRYONAL ENVELOPES OF 

 THE SCORPION. 



Bt H. P, Johnson. 



With Three Plates. 



CAMBRIDGE, U.S.A.: 

 PRINTED FOR THE MUSEUM. 

 Janu.^ry, 1892. 



