andle, .30 No. 488. Horn Centre, Plain 18 Note.—In compiling this Catalogue, we have enumerated only a small selectionfrom our regular stock of Mathematical Instruments in cases, either of the cheaperor of the more expensive kinds; and, therefore, parties who are about supplyingthemselves with this… … 489. 491. Ho. 48«. Dlviaers, 6 Inches long, wWh Pen, Peiicll and Needle PoUua, aud Lengthening Bar, »8.00 No. 490, Dlvidera, ey. Inches long, with Joint in each Leg, Pen, PeucU and Needle Points, and Lengthening Car, . . t • .89.25 114% ^- — ■■ ■- ■ ■ Frost & Adams Co., 37 Cornhill, Boston. N…
