408 



]\[r. F. Merrifield and Mr. E. B. Ponlton on 



Green |9«j)cr, gauze and cahhagr -haves (6, 7, 8, 10, 11) 

 caused the appearance of far lighter ptipse, the majority 

 being the ivhitish-yellow degree (2). Here too the influ- 

 ence through glass (8) was as strong as in the other 

 experiments (6, 7). The few j^up* subjected to light 

 through green glass (9) were of the two lightest and 

 greenest degrees, thus confirming the effects described in 

 Trans. Ent. Soc. Lond. 1892 (pp. 429-432, 446. 466— 



