372 ADDITIONAL NOTICES. [June 27, 1859. 



Amasia to Samsun. Now, for the first time in four months, I am comfortably 

 settled under a roof (till this moment my tent was my only house), for 1 am 

 in the house of the English Consul, my old friend, whose hospitality I was 

 accustomed to enjoy during the ten years J rambled through Asia Minor. I 

 had the pleasure to find at Samsun all the ponderous boxes (no less than 

 fourteen, full of minerals, plants, &c.) which I had sent from different points 

 of the countries I had crossed, and I am now occupied in investigating and 

 packing up these glorious trophies, painfully conquered during my adven- 

 turous expedition. As soon as this business is finished, and my treasures 

 embarked for Marseilles, I will remount my horse, in order to proceed to Con- 

 stantinople, following all the zig-zag of the shore. Though this journey will 

 require a ride of at least twenty-five days, I consider it quite a " parti de 

 plaisir," compared with my raml:)les through the inhospitable countries 1 have 

 crossed. 



Believe me, my dear friend, yours most faithfully, 



P. DE TCHIHATCHEF. 



3. Sudden Rise of the Sea at Heligoland. By Dr. E. Haemsen, m.d. 



Communicated by Sir Roderick I. Mdrchison, &c. &c. &c. 



Heligoland, June 16th, 1858. 

 Eequested by the Governor, Major Pattinson, I send a description of a phe- 

 nomenon that took place in the island of Heligoland, in lat. 54^ 145' n., long. 

 7° 53' E. of Greenwich, on the 5th of June. 



At 4'20 P.M. of the above date, during the finest and mildest spring weather, 

 a cloudless sky and the warmest sunshine, the thermometer at 73° F., with a 

 slight breeze from the E.ii.E., the sea around this island in the short time of 

 one quarter of a minute rose 6 feet, remaining about 3 minutes at this eleva- 

 tion, and during 10 minutes receded gradually to its former level ; no noise or 

 sudden gust of wind accompanied this phenomenon, nor was a wave formed 

 whilst it lasted. 



On Sandy Island, situate about a mile from this, the main island, and where 

 the beach rises very gradually, the phenomenon took place under somewhat 

 different circumstances ; there the sea did not rise in so unusual a manner, 

 but a large wave approaching from s.e. rolled with great force and speed, as 

 if driven by a gale, towards the shore, where breaking, it ran up the beach a 

 distance of 70 feet. This first large wave was followed by three smaller ones, 

 which meeting each other in the course up and down the beach, created a surf 

 which principally on the reefs of rock was very strong, covering them with 

 foam in a manner as it is seen only during a storm. 



At about i j)ast 4 the wind changed to the s.e., and increased to a mo- 

 derate breeze till 5 o'clock, the time of high-water, the horizon became 

 clouded, and the oppressive heat towards evening made a thunderstorm very 

 probable. 



At 8'35 and 8*50 p.m. the phenomenon re-occurred in a similar manner as 

 in the afternoon ; in both instances a wave of the height of 5 feet rolled from 

 west to east with great rapidity and noise towards the island; in both instances 

 the large wave was followed by three or four smaller ones. The approaching 

 of all these waves could be observed for two or three minutes, as they, rolling 

 over the far extending reefs of rock, covered them with foam ; the wind still 

 blowing a fresh breeze from s.e. 



During this, the water rose about 4 feet at th^ beach of this land, remained so 

 for two minutes, and then in a time of four minutes receded to its former level. 



In the course of the night there were no repetitions of the phenomenon, but 



