374 APPENDIX 



5. On Desert Sand-Dunes Bordering the Nile Delta. 



Geographical Journal, January, 1900. 

 A paper read before the R.G.S., November 2j^ 1899. 



6. On the Formation qf Wave Surfaces in Sand. Scottish 



Geographical Magazine for January, 1901. 



Contains positive and negative photographs of 

 "mackerel sky," showing the pattern of the blue sky 

 as the true aerial ripple- mark. 



7. On Sand- Waves in Tidal Currents. Geographical Journal^ 



August, 1901. 



A paper read before the R.G.S., June 10, 1901. 



8. Cinematographing the Severn Bore. Geographical 



Journal^ January, 1902. 



A short paper read before the R.G.S., November 25, 

 1901. 



9. On Snow- Waves and Snow- Drifts in Canada, with 



Notes on the Snow-mushrooms of the Selkirk 

 Mountains. Geographical Journal, August, 1902. 



A paper read in part before the R.G.S., May 12, 1902, 

 and in part on June 10, 1901. 



10. On the Dimensions of Deep-Sea Waves, and their 



Relation to Meteorological and Geographical 

 Conditions. Geographical Journal, May, 1904. 



11. Progressive and Stationary Waves in Rivers, 



Engineering^ 1906. 



These articles are included in Part III. of the book 

 on "Waves of the Sea" {vide post). 



