flgjffl MBM 
Hill, Arthur. W. — Studies in Seed Germination. Experiments with Cyclamen. With 
Plate XX and fifteen Figures in the Text . . . . . . . . .417 
Boodle, L. A.— -The Mode of Origin and the Vascular Supply of the Adventitious Leaves •* 
of Cyclamen. With six Figures in the Text 431 
Kidd, Franklin, and West, Cyril.— T he Role of the Seed-coat in Relation to the 
Germination of Immature Seed. With six Tables and one Chart in the Text . . 439 
Arber, Agnes. — On the Leaf Structure of certain Liliaceae, considered in Relation to 
the Phyllode Theory. With thirty-eight Figures in the Text ..... .447 
Ferdinandsen, C., and WlNGE, 0 .— Clathrosorus, a New Genus of Plasmodiophoraceae. 
With Plate XXI 467 
Willis, J. C. — Plant Invasions of New Zealand with Reference to Lord Howe, Norfolk, 
and the Kermadec Islands. With three Diagrams and eleven Tables in the Text . 471 
Uphof, J. C. Th.— Contributions towards a Knowledge of the Anatomy of the Genus 
Selaginella. The Root. With thirteen Figures in the Text ..... 493 
Hodgetts, William J. — A New Species of Spirogyra. With Plate XXII and five Figures 
in the Text . ............. 519 
Rivett, Maud F. — The Anatomy of Rhododendron ponticum, L., and of Ilex Aqui- 
folium, L., in Reference to Specific Conductivity. With seventeen Diagrams in the 
Text ................ 525 
Drummond, Montague. — Besleria lutea, Linn., a New Example of Water-calyx . . 551 
NOTE. 
JONES, W. Neilson.— A Simple Root Auxanometer. With two Figures in the Text 555 
NOTICE TO SUBSCRIBERS. 
Change of Price. 
As from January, 1921 (Vol. XXXV, No. 137), the subscription price for fou. 
numbers will be 40J. (foreign postage is. 6d. extra), or 45,?. for the volume bound in cloth. 
Cloth cases may be obtained, price 5.9. 
The price of future single volumes (bound in cloth) will be 65.9. net, and of single 
parts 15,9. net. The prices of existing volumes and parts are now net , and volumes will 
be supplied in cloth bindings when existing stocks (with morocco back) are exhausted. 
But subscribers who wish to continue the present binding are asked to communicate 
with 'Mr. Milford. 
NOTICE TO CONTRIBUTORS. 
V \ - • ' C ' 1 
English contributors should address their papers to Prof. J. B. Farmer, Imperial 
College of Science and Technology, South Kensington, S.W. 7 ; and contributors 
in America to Prof. R. Thaxter, Harvard University, Cambridge, Mass. 
Papers sent in with a view to publication must he type-written and must conclude with 
a summary of the contents . In view of the increasing numbers of manuscripts submitted 
and the inevitable limitations of space, the Editors desire to impress upon contributors 
the importance of conciseness in the treatment of their subject-matter. Whilst they are 
not prepared at present to draw a hard and fast line, the Editors suggest that the longer 
papers should not exceed 12,000 words. Contributors will receive one proof in page, but 
it is assumed that all but verbal corrections have been made in the original manuscript ; 
an allowance at the rate of ten shillings per sheet of sixteen pages is made for alterations in 
the proof (printers* errors excepted), and contributors will be responsible for any excess. 
Illustrations. These where possible should be suitable for reproduction as line- 
blocks in the text. Where lithographic or collotype plates are required the figures should 
be planned so as to fill properly a 4to or an 8vo plate. The maximum space available 
for figures in a qto plate is 8^x11^ inches, in an 8vo plate 8^x5^ inches. Attention 
to this will conduce to the rapid publication of papers if accepted. 
Each contributor to the Annals of Botany is entitled to receive gratis one hundred 
separate copies of his paper, and may purchase additional copies if he informs the Editors of 
his wishes in this respect when he returns corrected proofs. The price of these additional 
copies will depend upon the amount of text and the number of plates in the paper. 
