lot of normal plants, with only a few abnormal forms, 

 with nearly no new forms. If the spores are taken from 

 the most affected part of the frond, the result will be 

 quite different — few normal and plenty of abnormal 

 plants with some beautiful new forms. I wish you would 

 try it. You will be much interested in the experiment." 



As the early numbers of this magazine became scarce, 

 we repeatedly gave notice that, the supply was limited, 

 but few appeared to appreciate the necessity for hurry. 

 Later, when Volume V. went out of print, we were often 

 offered a dollar for a single number needed to complete 

 files, and had to decline the offer because the number was 

 unobtainable. Volume VI. is now practically out of 

 print. It will be entirely so in another month. To some 

 the charge of six dollars for a set, including this volume 

 and succeeding ones to the present, seems out of propor- 

 tion to the value offered, but it should be remembered 

 that many new species were described and illustrated in 

 them, and many additional features add to their interest. 

 They will always be worth the money paid for them, and 

 are likely to increase in value as the years go by. But 

 nine more sets are offered. All cannot have full sets. 

 The first to order will be the fortunate ones. The sets 

 are especially valuable to young students who are not 

 familiar with the literature of the subject. 



INDEX TO CURRENT LITERATURE 

 RELATING TO FERNS. 



Readers are requested to call our attention to any omis- 

 sions from this list. 



Cardiff, I. D. Development of sporangium in Botry- 

 chium. Illust. Botanical Gazette, My. 1905. 



Clute, W. N. The Round-leaved Maiden-hair. 

 Illust. Fern Bulletin, Ap. 1905. 



Clute, W. N. What constitutes a species in the Genus 

 Isoctes. Fern Bulletin, Ap. 1905. 



