The Bouche d' Erquy in 1908 . 161 
very striking change by consolidating and raising the bare mud¬ 
flats. 1 Under the circumstances it was decided to experiment with 
Spartina at Erquy (where none of the forms occur) with two 
objects in view : (i.), to study its behaviour in a sandy marsh, (ii.), 
by the concurrence of the two parent species to see whether the 
supposed hybrid, S. Townsendii , would appear spontaneously. 
Fig. 5. The same sand-bank re-charted in September, 1908, shewing 
advance in colonisation. Explanation and scale as in Fig. 4. The greater 
breadth of the transverse belts of S. radicans, as compared with those in Fig. 4, 
is due to the difference in the seasons when the charts were made. 
On the occasion of the April visit, with the co-operation of Dr. 
Stapf, rhizomes of 5. alternifiora were obtained at Southampton 
and transplanted into the muddiest ground available at Erquy, it 
being the intention, should the plant become established, of intro¬ 
ducing S. stricta later on from a locality about twenty miles away. 
The experiment, however, would appear to have failed, as no traces 
of S. alternifiora were to be discovered when the spots were 
examined in September. 
1 O. Stapf. Spartina Townsendii. Gard. Chron., 1908, p. 33. 
