Colouring in Birds and Insects, 

 Selenium. 



559 





dA 











X. 



di 



E. 



Ejfe. 



lOEfc. 



Jc. 



6950 



23 



•043 



•ooo 



•ooo 



•05 



6410 



2L 



•048 



•005 



•065 



•09 



6075 



18 



•050 



•013 



•13 



•13 



5745 



16 



•062 



•019 



•19 



•20 



5410 



13 



•077 



•034 



•34 



•28 



5070 



11 



•091 



•048 



•48 



•40 



4740 



9 



•111 



•068 



•68 



•53 



4405 



8 



•125 



•082 



•82 



•61 



Following are similar series o£ observations for fuchsine 



and for diamond green. 



Fuchsine. 





dA 







1 



X. 



di ' 



E. 



lOEft. 



log E . 

 •04 



670 



50 



•020 



00 



640 



40 



•025 



•05 



•05 



615 



18 



•055 



•35 



•38 



590 







•11 



•90 



75 



560 



7 



•14 



1-2 



1-4 



525 



6 



•16 



1-4 



1-7 



500 



45 



•22 



2-0 



15 



470 



45 



•22 



2-0 



10 





D 



amond Green. 







dA 







1 



X. 



di 



E. 



WE*. 



Log E . 



700 



12 



•08 



0-7 



0-8 



680 



8 



•12 



11 



1-1 



660 



7 



•14 



1-3 



1-3 



640 



5 



•20 



1-9 



1-5 



620 



4 



•25 



2-4 



1-5 



600 



4 



•25 



2-4 



1-2 



580 



4 



•25 



2-4 



1-0 



560 



6 



•16 



1-5 



•65 



540 



25 



•04 



03 



•23 



520 



60 



•016 



0-06 



•08 



500 



80 



•012 



009 



•02 



480 



70 



•014 



0-04 



•01 



460 



45 



•022 



0-12 



•25 



440 



15 



•007 



0-57 



•40 



T) _ ^o incident light 



r = 



transmitted light 

 * No account was taken of the loss by reflexion. 



