Vol. XXII. February, 1912. No. 



BIOLOGICAL BULLETIN 



Till. c-MoTIC AND SURFACE TENSION* PHI \OM1.\.\ 

 OF LIVING ELEMENTS AND THEIR PHYSIO- 

 LOGICAL SIGNIFICANCE. 1 



J. F. McCLENDON. 



CONTENTS. 



I. I lit: i; tion iij 



1 1. ( Kinotic Phenomena in Plants 120 



111 Phenomena u 7 



i In plants I J7 



le and Nerve \ _<, 



i-l Movement i ; I 



;>aKation of the Bio-electric Changes 136 



1\ -is 139 



\ |>crties of the Blood Corpuscles 142 



VI V -i and Secretion 



i >n through the Gut i 



Relation of Aquatic Animals to the Medium i 



;i of Lymph and Tissue Juice 152 



u 



VII. (Yll I>i\i-ion.. : 



PREFACE. 



ThU paper formed the basis for two lectures -ivm In-fore the 

 class in ph\-iology at Woods Hole, July 7 and 8. i)ii, although 

 I'uiii- in liinii.il lime, some parts were omitu-d. Since then 

 then- ha^ appeared a second edition of Hober's " Phy>ik.ili-clu- 

 Clu-inir clt-r /rile und Gewebe," which n-\ir\\> much of tin- 

 littT.iiurt cmi-itlered in this paper. H<>\\c\cr, owing to an 

 t-ntin-K- (lillncnt mode of presentation, it is hoped that the 

 pre-ent treat meiu of the subject might be helpful to many 



ieral readers, some of whom would not read HoU-r's book. 



1 l-iom tlii- 1- '.ml. i \ . 'i.'^ical Laboratory of Cornell l"nivfrsit>- Mnlical College, 

 .t\-. 



