298 



BOTANICAL GAZETTE 



[OCTOBER 



TABLE V 



Embryo 



i 



2 



3 

 4 



5 

 6 



7 

 8 



9 



io 



n 



12 



13 

 14 



16 



17 

 18 



19 



20 



Length of 

 embryo 



Dry 



83 

 108.5 



85-5 

 101 



92 



104- 5 



98.5 

 81 



87 



96.5 

 98 



93 

 90 



98 



87.5 

 112 



85-5 



96 

 75-5 



IME 



i hr. 



99 



188 



103 

 96 



125 

 I07 



98 



IOI 



no 



125 

 101 



112 



105 

 98 



122 



95 



"5 



101 



84 



3 hrs. 



IOO 

 132 

 108 

 Il8 

 I20 

 129 



us 



101 

 109 

 no 

 127 



US 



125 



US 

 114 



134 

 in 



125 



114 



95 



6* hrs. 



108 

 140 



112 



131 



125 



134 

 122 



IO9 



I20 



Il8 



132 



126 



129 



134 



no 



145 



119 



135 

 123 



104 



23 hrs. 



103 

 149 

 127 



I50 

 I20 



134 

 130 



112 



125 



Il8 



131 



131 



126 



I36 

 114 

 I48 

 122 



134 

 I20 



98 



31 hrs 





50 hrs 



106 



256 

 129 



160 



122 

 141 

 I30 

 III 



125 

 Il8 



132 



131 

 128 



235 



119 

 156 

 122 



149 



121 



98 



96 hrs 



106 



350 



145 

 1 8c 



125 



157 



144 

 in 



125 

 121 



137 

 129 



125 

 290 



no 



192 



156 



200 



127 



98 



TABLE VI 



Showing the elongation of 20 Alisma embryos each in water, 0.01 N HC1, and 

 0.001 N HCL Coats removed at both ends of the embryo. Temperature 25 C. 



Condition of the embryos 



Air dry 



1 hour in water 



3 hours" « 



6^ u u « 



22 u a u 



31 ■ u u WWW 



50 a u u . ... 

 96 u « " 



Air dry 



1 hour in 0.01 X HC1. 

 1 hour in o. 001 N HCL 



f.1 « « u u 



°3 



2% a u u u 



50 a U u « 



Air dry 



1 hour in 0.001 X HC1 

 3 hours * " 



5| « « u tt 



2 ~ u u u u 



-j « u u a 



96 * * * " 



Total length of 

 embryos 



Average length of 

 embryos 



l8345 



2073 5 



2312.5 

 2470.0 



2759 -5 

 2832.0 



3025.0 



6720.0 



1876.0 

 2104.0 



2257-5 

 2471 .0 



2462.0 



2512.0 



91.7 

 103.6 

 115. 6 



1235 



137-9 

 141 .6 



151.2 



33 6 ° 



938 

 105.2 



112. 9 



1235 

 123. 1 



125.6 



No further elongation 



1878.0 

 2131.0 

 2319.0 

 2474.0 

 25150 



27895 

 31390 



93 

 106 



116 



123 



125 



139 

 156 



9 



5 

 o 



7 

 7 

 5 

 9 



Percentage of in 



crease over dry 



length 



13.1 



26.1 



34-7 



5°-4 



54-3 



649 



266.0 



12.2 



20.3 



31.2+ 



31.2 



33-9 



13 



4 



23 



5 



31 



■7 



33 



9 



48. 



■5 



67 



. 1 



