BENJ. PIKE'S, JR., PRICE CATALOGUE. 39 



No. 



874 Fig. 616, hygrometer for sl\owing the dryness 



or moisture in the air, &c. - $ 2.50 



875 Fig. 617, Saussure's hygrometer, 5.00 



876 Fig. 618, Darnell's " - 14.00 



877 Fig. 619, Mason's " $3.50 to 5.00 



878 Fig. 619, ditto, stand, packed in rosewood case, 7.00 



879 Fig. 620, Jones's hygrometer, - 5.00 



880 Fig. 621, Leslie's thermometric hygrometer, - 5.00 



881 Fig. 622. conical rain gauge, - 2.50 



882 Fig. 623, cylindrical rain gauge, with gradu- 



ated tube, - 7.50 



883 Fig. 623, ' " with float, - 6.00 



884 Fig. 624, Lind's wind gauge, - $6 to 8.00 



885 Fig. 625, Cumming's statical thermometer, - 25.00 



SPECTACLES, EYE-GLASSES, &c, 



886 Figs. 628 and 632, gold spectacles, with single 



joints, octagon, oblong, or oval eye, $7 and S.OO 



887 Figs. 629 and 632, ditto, extra fine, - 9 and 10.00 



888 Figs. 630 and 631, gold spectacles, double 



jointed, with slide or turnpin, $8 and 9,00 



889 Figs. 630 and Fig. 631, ditto, extra fine, $10 to 13.00 



Best pebble eyes, extra, for concave, 2.50 



for convex, - 1.75 



890 Figs. 629 and 632, silver spectacles, single 



jointed, $2.00 ; extra, - - - 2.25 



891 Figs. 630 and 631, silver spectacles, double 



jointed, with slide or turnpin, - 2.00 



extra, $2.25 to 2.50 



892 Fig. 635, steel spectacles, blued, of fine quality, 



single joints, very elastic and light, with 

 octagon, oblong, or oval eyes, $2 to 2.50 



893 Fig. 635, ditto, of good quality, $1.25 and 1.50 



894 " inferior, - 62cts. to 1.00 



895 Figs. 633 and 634, steel spectacles, blued, of 



fine quality, very elastic and light, double 

 joints, with oval, oblong, or octagon eyes, 



$2,30 and 3.00 



