Shown by Recording Tide-gauges. 125 



28 minutes — final mean 30m. At high tide the period is 

 entirely different and fewer complete oscillations occur :* 65, 

 70, TO,' 67, 70, 68, 75, 65, 72, 69, 65, 65, 70, 70m.— mean 69m. 

 At times of violent disturbances during gales there is a tend- 

 ency for oscillations of both periods to persist, along with a 

 running accompaniment of very minute and very rapid oscil- 

 lations. 



3. Digby, N. S. (on Annapolis Basin connected with the 

 Bay of Fundy by a narrow strait — Digby Gut). The undula- 

 tions are always small, rarely exceeding an inch and therefore 

 difficult to measure with accuracy. On the only occasions 

 when the extent was sufficient the periods were:f 12, 11, 11, 

 11, 10, 11, 13 — final mean 11m. 



4. Westport, N. S. (on Bryer Island, Bay of Fundy, facing 

 Grand Passage between Bryer Island and Long Island). 

 Undulations are comparatively rare, of short period, and never 

 exceeding 4 inches ; usually they are very irregular and have an 

 appearance of two or more systems superposed. The gauge 

 only ran for a few months and on only six occasions were there 

 clear oscillations, and on only three occasions did steady regu- 

 lar oscillations seem to emerge from the confusion, the mean 

 periods being^ 17, 14, 16 m. — mean 15 m. (but not much reli- 

 ance can be placed on this figure). 



5. Welchpool, Campobello Island, N. B. (on a narrow wind- 

 ing channel flowing into the Bay of Fundy). Here there seem 

 to be no secondary oscillations. 



6. Hopewell Cape, N. B. (on Shepody Bay at head of Bay 

 of Fundy). 7. Parrsboro, !N. B. (on Minas Basin at the head 

 of the Bay of Fundy). 8. Windsor, N. S. (on the Avon 

 River which flows into Minas Basin). At the above three 

 stations the range of the tide is, as is well known, very great 

 and the tide-gauges only registered the crests of the tidal 

 waves. No secondary undulations are shown. 



The records for the two points next noted are not from 

 Tidal Survey gauges but from a portable recording tide-gauge 

 of my own construction. Accounts of these have already 

 been published. § 



9. St. John River, N. B. (The station of observation was 

 on a small bay in the mouth of the river, separated from the 

 harbor by the narrow gorge, only 100 yards wide, through 

 which the river rushes into the harbor.) There are two series 

 of oscillations, one of a period between thirty and forty min- 



* Sept. 27 (1); Oct. 7 (1), 8 (2), 9 (2), 12 (1), 21 (2), 31 (2); Nov. 6 (2), 16 (2) 

 18'(1), 22 (2): Dec. 4 (1), 5 (1), 6 (1)— 1898. 



f July 1 (t), 18 (4); Aug. 13 (8), 27 (11); Oct. 24 (9), 27 (5); Nov. 27 (6)— 

 1898. 



% Oct. 13 (5); Dec. 26 (7), 27 (4)— 1898. 



§ This Journal, iii, 1897. Trans. Nat. Hist. Soc. of New Brunswick, 1897. 



