Show the discovery of the age the now patent quadrant the invention of thomas hedgecock R N is just j now absorb iq the attention of nautical and scientific men 11 it is claimed that til tine G curious 11 instrument 1 ment gives the ships position with or without w i phout the ald aid aid ald of the sun moon or s ars marks latitude and longitude at it any time of liv III ight night or day by observation upon a lamp or oraby any other visible object measures horizontal izo antal angles angies with the most remarkable facility and accuracy renders entirely the tile nse nee of the old quadrant tile the the tables of logarithms and nautical almanacs in the navigation of ships that in fine it has all the tile utility both in navigation and practical astronomy of all the instruments now ieuse in use usa for that thai purpose combined with a simplicity and certainty hereto pore fore unknown these those are only a few ot odthe the advantages dv i a claimed for this remarkable anstr instrument ament which has recently been tested by an officer of skill and experience peri perl ence ende capt henry french of our om own navy luvy the tha note of that thau gentleman vill will give give tilo tile beat idea ida lda of the practical 1 world workings s of the new instrument 1 NAZY nay NAT YARD BOSTON bosto MASS malci alaica 10 lo 1857 durin darin the month of january ay last I 1 made a journey to albany returning to boston by way of new york and expressly for the 1 of verifying verl veri ing the 1 claimed to be obtained ity ily by abs observations s witti Hedge cocka patent I 1 maraat ua rant aai gwi awi 1 f alforo before leaving boston my observations were taken with nith the gun sun birri arriving ving at night ui fht ai at albany the moon was observed at new york having aielt neither her sun nor moon moon I 1 observed upon a gis lamp at the astor house honse at springfield again used sd the sun before leaving boston the two tivo images othe of the sun were brought in contact with parallel adjustment at albany and at each of the other places the images of the sun moon and gas lamp were found very much separ separated ateo and when brought brou glit iu in parallel contact the distance indicated by the llie instrument gave the difference of latitude and longitude between each place with a remarkable degree of exactness 11 FRENCH Coin commander mander U S nav navy |