232 
Willis and Bur kill. — Flowers and 
21. Schulz, A.: Beitr. z. K. d. Bestaubungseinrichtungen u. d. 
Geschlechtsvertheilungen bei den Pfl. (Biblioth. Bot. X and 
XVII. Cassel, 1889-90.) 
22. Scott-Elliot : Notes on fertilization, chiefly on British Cruci- 
ferae. (Trans, and Proc. Bot. Soc. Edinb. xix. 1891-2, 
P* 237 •) 
23. — — — : Flora of Dumfriesshire. Pt. I. London, 1891. 
Pt. II in Trans. Dumfries and Galloway N. H. Soc. 1891-92. 
(Gives lists of insect visitors.) 
24. Verhoeff : Biol. Beob. auf d. Insel Norderney. (Abh. naturw. 
Ver. Bremen, XII. 1891, p. 65.) 
25. — : Blumen u. Insekten auf d. Insel Norderney. (Nova 
Acta d. Kais. Leop. Carol. Deutsch. Akad. d. Naturf. 
Leipzig, 1894.) 
26. Willis: Gynodioecism in the Labiatae. (Proc. Camb. Phil. 
Soc. 1892-93. Three papers.) 
27. : Contributions to the Nat. Hist, of the Flower. II. 
(Linn. Soc. Journ. XXX. 1894, p. 284.) 
28. Engler und Prantl : Die natiirlichen Pflanzenfamilien, contains 
general description of the biology of each order. 
2. Observations at Auchencairn, 1894, 
by J. C. Willis. 
Auchencairn is a small village about two miles from the 
sea, on the southern coast of Scotland. It lies in lat. 54°5o' N. 
(corresponding to Schleswig-Holstein), and has an approxi- 
mate mean annual temperature of 9 0 . To the west is the 
Ben Gairn range of hills (highest point 1,250 feet), and to the 
east a small bay, dry except at high water. The conditions 
for vegetable growth are all very favourable, and there is 
a rich flora. The writer stayed in Auchencairn from August 15 
to September 15, 1894, and the weather being favourable 
throughout, succeeded in determining, with some complete- 
ness, the visitors of almost all the plants which formed, at 
that period of the year, important features in the flora. 
Great care was taken to watch each plant at all the different 
