ox THE rnEKOMENxi. OF STATIOXAEY TIDES IX THE EXGLISII CHANNEL. 391 



The Committee, having carefully considered these points, and as tliey 

 cordially agreed in them, urged the Council to press them upon the several 

 Governments with whom they were communicating, respecting the labours 

 of this Committee. It having also been pointed out, that, although the 

 form in which the tidal observations as presented in last year's report 

 (referred all to the English Ordnance Datum, and to Greenwich time) 

 was most suitable for all observers on this side of the Channel, yet that it 

 was hardly so for those on the Continent who had taken part in those 

 observations, the Committee therefore decided upon reducing all the 

 observations to the French official Datum of levelling and to Paris time.. 

 A pamphlet containing these tables, and prefaced by a special report in 

 the French language, has been prepared for presentation to each of the 

 foreioTi Governments, and observers on the Continent ; and copies of it 

 were transmitted through the Council with the thanks of the Association 

 as above referred to. A copy of this document is appended hereto. 



It is with much pleasure that the Committee have to report that the self- 

 recristering tide-gauge, which, at the instance of this Committee, the Board 

 of Trade established on the Admiralty Pier at Dover, has been working, 

 apparently with satisfaction, for neai-ly twelve months. A valuable series 

 of tidal records may, therefore, now be commenced at this important 

 station. This is highly desirable ; and it is a measure which the Com- 

 mittee would strongly urge upon the Board of Trade. Seeing that 

 similar self-registering records have been most carefully collected for some- 

 time back at Ostend, at Dnnkerque, at Boulogne, and at Havre, on the 

 opposite coasts ; while on our own side, already, self-registering gauges- 

 exist at Sheerness, at Ramsgate, and at Portland. 



The self-registering tide-gauge at Madeira, which the Portuguese 

 Government, at the instance of H.M. Secretary of Foreign Affairs, acting 

 on the request of this Committee, sent out to the Bay of Funchal, has 

 been recently erected, and, it is understood, will soon be working 

 satisfactorily. 



The Committee beg to report that the sum of £10 has been expended 

 in the preparation, pi-inting, and distribution of the pamphlets to foreign 

 observers. They request that the Committee be reappointed, with a 

 grant of £10 to cover these expenses. 



APPENDIX. 



EappoPvT de la Commissiox CHAKGiiE d'obtenir des Obseevatioxs simul- 



TANEES SUR LES MaREES DE LA MaNCHE ET DE LA MeR DU NoED, EX 

 DES ReXSEIC.XEJIENTS SUR LE PHENOMtXE DES MaR^ES STATIONNAIBES 

 QUI ONT LIEU DANS CES MEES. 



Les Memlres de la Commission sont — Sir William Thomsox (President)^ 

 le Dr. Mekrifield, le Professeur Osborne Reynolds, le Capitaine 

 Douglas Galtox, et M. James N. Shoolbeed (Secretaire et Eaj)- 

 porteur). 



Au Congres de Plymouth, en 1877, une Commission a ete nommee par 

 I'Association Britannique dans le but indique ci-dessus ; et aussi pour 

 prier le Gouvernement Portugais, par I'intermediaire du Gouvernement de 

 sa Majeste Britannique, d'entreprendre un serie d'observations sur les 

 marocs au Nord de I'Ocean Atlantique. Cette derniere demande a ete 



