[In s previous letter tin meeting of tl....

[In s previous letter tin meeting of tl.e party by a committeo, and their arrival and distribution among our citizens hae beon noticed ] The Acadamv of Sciences, vvitb their guests, alter the most hospitab'.e receptiou by the citizens ol Ann Arbor, assembied on Wednesday evening at the Laboratory of the Medical College, wuere a lectureion Galvanic Eieetricity, was dölivered hy Prol. Dtouglass, of the Michigan Statu TJniversity. The lectufor made a few brief and pertinent re marks on the methods of genera ting eleetriricity by cheinieal aetioo and induction, and proceeded tc Ilústrate! tile rnettiod by a new and beautiful appara tus, callad "Rhumkorf coi!," attached to the ordioary cups of the ordinary battery This coil was invonted some reara sinos by a Germán, whose name ït bears, bnt was brought 10 great per[octiori by Mr. Eitichie, of Boston. It consists of tw coila of insulated wire, an exterior and interior coil, one of which contams more than thirty miles length of wire By mearis of this con trivunce, the pass-jge of the electric eurrent thrmigh one of the coila, inducing a corresponding wave of eleotricity to pasB through the other, the intenhity of the discharge is not merely doublod, but increased many fold. Using this instrument in conneüon with an ordinary battery of rather small mze, he eclectric spark was made to past eighr, inches through at.m03ph.eric air, and more thau four times that ditaj vacut. l'rof. Douglasa-entertained u for nearly two hour.s by a most brilliant display oí electrial phenomena, explaining to us a baautitul assortment of Gesler's tubes, so culled from tlieir invsnt()r andmanufacturer in Bonn. whicli have recently been ruceived by the Un.iversity. By the use of these tubes the electric sjiark was made to puss through varkms media, sush as ether, sulphuric acid, alcohol, condensed air, &c, and most varied and beautiful effects were produced. For a more perfect display of the varioim phenomena, the rootn was darkend ar)d the audience could only catch a glimpse of the. leuturer and of one another's fa;;es by the -'tiiful flashes" of thiu lightning in miniature. With the more simple of the experimenta, murmurs oí pleasure were heard thro' the darkness in all parts of the room, and as the display increased in beauty, the ilelight of the audience showed itseli in hearty applausp. At a quarter before nine o'clock on Thursday moroinr, the escursionists were forinallv weloomed to the University by the Chaneellor, Rev. Dr. Tappan, in the chapel oí the Uuiversity. The chapel was densaly crowded bytha students of the University, Alma Mater taking the opportunity to display her ehoieest jpvvels firnt. And it is no email cause for just pride in apy eeat oí learoing that it is able to assemblo nearly seven bundred young men in its balie. The Rev. Ghancéllor made a beantiful alluston to the story of tho knights and ladies whom (Jhauncerhas immortaüzed in the Canterbury Tales, and drew a comparison betweon their pilgninage to (Janterbury and our own to Ann Arbor. He then welcomed us most cordially to the Univorsity in the name oí seience, and concluded with a brief allusion to the progresa of education and learning in the West, and apoko of our pilgrimage as one of the evidences tliat the brightest hopes of the friends of that knovvledgo which is power, will basten to tljeir fulfillment Prof. H. A. Johnson, ot Chicago responded in behalf of the Acudemy and its gueats. IIj was proud to come baak to Alma Mater, whicb he had left elevan years since, and tind that the srnall beginoipgs of that tune had grown to suc:i próspéri'ty and importance. It was delightful for us all to come here, sorne to meet with old Vioiids, and all to form new and valuable auquaintances whiqh would bo remambered for years. He thanked the Chancellor, and through him the oflicers of' the University and the citizena oi the place, for their cordial welcome The spsoches, botb of tho Ohanuellor and Prof. Johnson were warmly applauded, and after thp Jatter had closed, Dr. Tappan announced that the library, museums and laboratorios would be open to visitors during the day, and eommitteos would bo ia waiting to act us es-jort. The Library was first visited It is , in the ame building as tho ühapel. It consists of about 8,000 well selected volutnos, ihus fortning a nuoluus for a largo and valuablo library After leaving tho library we entered the Museum of N'atural Illstory. Here we f'ound the collection of the lamented lloughton, who lost kis lifo while prosecuting the guological survoy ; those of Prof. Suger, State Zoologist, and of Dr. Wright, iState Botanist. These, with the collection made by ■ eugagd in tho present biirvey, are au honor to the itute and ah evidence of tho libera' ity, enterpriso, and intelligence of its citicr:s. Tlie oollections aro in a good state of preservation, and aro arrayod so as to I display to the best nilvantage. When j the survey is oouipletud, tbis will be un1 doubtedly one cf the best coüections in tho country. There was enougb hertto beseen to havo profhably oceupied day8 instead of tho few hours vffaich oould be appropriated froiu our limited time. From the Musiiim of Natural History we next entered tho G-allery oí Fino Arta, vvhich coutains quite a nurnber ot piaster casts ot fainous works of arts, as weh a,3. a fine exhibition of photographs and engravings of historical and classic intereHt. Koger's Nydia is soon t ) ba uddt'd to thu gallory by subscription of citizens of Anri Arbor, vvhieh place claims this gifted American as ono of her kous. The medical gentlemen of the Acauoir.y visited the Medical Department of the University, where a finí' class of two hundred young nien are pursuing their studies. Af'ter lifttening to iiiteresting loctures by Prof Palmar and Ford, the laborntory of Prof. DoilglMi the tunseums for illustration of the different departmentB in tha Med ical School, wero vinited, and were pi'onounced vvell aclaptud for the purposos inttnded. A glance at the various recitation rooms aod society halls of the Under gradante Department, cotnpleted the ploasures of the morniiu": The visit to the Observntorv anc explanation of inslrurnents by Prof Brunnow, and tho lecture by Prol Winchell, will be postponcd to anothc article.