APPENDIX. 





The American Association for the Advancement of Science. — The annual meeting* 

 of the Association, for 1851, was held at Albany. N. Y., during the week commencing 

 Monday, August 18th. Prof. Agassiz was President of the meeting. The attend- 

 ance was unusually large, and upwards of 120 papers were presented. The depart- 

 ment of Geology and that of Astronomy and Physics were most largely represented, 

 while Zoology received comparatively little attention. The address of Prof. A. D. 

 Bache, President of the year past, was delivered ^^ednesday evening : it was an 

 able and instructive discourse on the circumstances attending the organization of the 

 Association, its progress, and the direction in which to look for its greatest usefulness. 



One of the most important points brought out in the astronomical department, 

 was a new Lunar formula by Mr. Longstreth, containing a correction, according to 

 which an error hitherto disregarded, is ehminated. and a perfect coincidence with 

 observation is obtained. Prof. MitcheVs improved method of observing right ascension 

 and IS". P. distance was reported upon by a committee in terms of the highest commen- 

 dation. In geology, the Taconic system was brought up by Prof. Emmons, and the 

 claims urged for it were ably set aside in remarks by Prof. W. B. Rogers in a paper 

 on the geological features of M^estern Vermont and Massachusetts, and also by facts 

 brought forward by Prof. J. Hall, ilr. J. W. Foster, and others. In zoology, Prof. 

 Agassiz presented a paper on a new mode of alternate generation, showing that the 

 bulbs of Uie Tubularia^ are proper Medusae, remaining attached to the ammal and 

 giving out true ova. "We must reserve farther remark to our next number. 



The x\ssociation was treated wnth the highest liberality by the citizens of Albany, 

 and at the close of the meeting, it was announced that the city would defray the ex- 

 penses of publishing the volume of Proceedings. By invitation from the city of 

 TroT, there was an excursion to that city on Thursday, where a session was held at 

 the Rensseker Listitute, after wliich the members were shoTVTi to a handsome col- 

 lation. 



Prof. Peirce, of Harvard, was chosen President for the next year. The meeting 

 will be held at Cleveland, Ohio, on the 3d Wednesday in August, 1852, this city- 

 having invited the Association and generously offered to publish the Proceedings at 

 the city expense. A similar invitation and offer were received from Brooklyn ; but 

 that from Cleveland was of prior date. A semi-annual session was not appomted 



We give below the titles of the papers presented. We would sohcit information 

 from members as to any omissions, which we will correct in our next 



1. Astronomy, Physics, Mathematics. 



On the Origin of the Forms, and the present condition of the Cluster of Stars and 

 Resolvable Nebula ; by Prof S. Alexaxdkr, of Princeton. 



On the Atmospheric Envelopes of Venus and other Planets ; by the same. 



Account of a Meteor seen on the night of Oct. 3, 1850; by Prof Brocklesbt. 



On the Solar Echpse of July 28 ; by Lieut. Davis, U. S., N. 

 , Additional observations on the tides at Cat Island; by Prof. A. P. Bache, Super- 

 intendent of the U. S. Coast Survey. 



^otes on the Tides at Sand Key, near Key West ; by the same. 



On some phenomena bearing on Electrical Theory; by Prof. Joseph Uenet. 



On Electrical Theory ; by Dr. Robert Hare, of Philadelphia. 



On a Meteorological Report of Prof. Espy ; by the same. 



On a problem in the Doctrine of Chances ; by Prof B. Peirce, of Harvard. 



An account of Longstreth's Lunar formula; by the same. , K^^^\,^^ ^r.^ 



, On the relation between the square roots of Negative quantities in A gebra and 

 ,the principles of Perpendicularity in Geometry ; by Johx Patersox, of Albany 



On Daltonism or Blindness to particular Colors; by Prof McCuleoh, of Princeton. 



Case of the Tertiary Rainbow; by Charles HART\yELL. 



On Special Analogies in the Phenomena presented by the two Scn.e. of Sight 

 and Touch; bv Prof. S. Alexander, of Princeton. -d.*:^^ . "hv 



On the relation between Erect Vision and the Inverted Image of the Retma , by 



iiun 



j Prof. W. W. Clark, of Albany. 



* 



Secoxd Series, YoL XII, No. 35.— Sept., 185L 



S9 



