610 SUMMAEY. 



SUMMAEY OF VARIOUS EXPEDITIONS, SOME 

 NOTICE OF WHICH IS CONTAINED IN THE 

 " MANUAL." 



I. Parry's First Voyage in search of a North-west Passage, 

 1819-20: 



Observations on Tides at Melville Island. 



Determination of the three magnetic elements. 



Observations on Sound. 



Existence of twilight throughout the year. 



Pendulum observations. 



Description of Aurora Borealis. 



II. Parry's Second Voyage in search of a North-west Passage. 



III. Parry's Third Voyage for the discovery of a North-west 

 Passage. 



. IV. Parry's Voyage to Spitzbergen and approach to the Pole. 



V. Sir John Ross's Second Voyage in 1829-33 : 

 Meteorological observations. 

 Observations on refraction. 



Auroras. 



Magnetic observations. 



VI. Sir John Franklin's Second Expedition to the Polar Regions: 

 Observations on velocity of sound. 



Auroras. 



VII. Expedition of Capt. Maguire, in H.M.S. "Plover," to 

 Point Barrow : 



Magnetic observations. 

 Auroras. 



VIII. Sir Edward Belcher's Expedition in search of Sir John 

 Franklin : 



Meteorological observations. 



Tides. 



Rate of formation of floe-ice. 



Composition of floe-ice. 



Remarkable refraction, " Paraselense." 



Observations of Aurora. 



IX. McClintock's voyage of the "Fox": 

 Meteorological observations. 



Tidal observations. 

 Ice observations. 

 Observations on refraction. 

 Magnetic observations. 

 Auroras. 



X. Second Grinnell Expedition of Dr. Kane in 1853-55 to 

 Smith Sound and Kennedy Channel : 



Meteorological observations. 

 Tidal observations. 

 Sea temperatures. 

 Mao;netic observations. 



