Rensselaer Union and Jasper Republican, Volume 8, Number 30, Rensselaer, Jasper County, 13 April 1876 — MECHANICAL AND SCIENTIFIC. [ARTICLE]

MECHANICAL AND SCIENTIFIC.

cMAfrtPA, makes tfor-following cutfow dispoHittyn of its eggs,: ThtacateWfrutM iir a mass of alDumtripns Jelly, as is usual ainbug batrachikns, ahd are then attached to, foe' leaves of trees.ovarhadg« albumen qutekiy hardens, tnclosing the cggiTnnstrong envelope. Attiie rainy Reason this isisoftencd and the eggs are waslied into the water. ’’ —A ttiefchanic writing to the Scientific American gives the following as a cheap and reliable way ot fastening the ends Of large belts : Cut tlie ends perfectly square ana bring them • closely together. Take Another piece of belt, abont three ieAt song, of the same width and thickness as tlie one being mended, and place it ovAr the joint on tlie outsider tielt the two M>gctlier With what are known a# elevator bands.- ~Tbe tools required are a. brace qnd bit to bore the holes, and a small pair Of blacksmith’s -tongs to tighten the nuts with. urt •!> • , •—An elaboratedflioacgraph oo thephenomena of digestion in- insects hks (been lately publialied by Prof. Felix Plot* tin, so well known’ by'his researches in this direction,..in- jthe memoirs .of this Royal Academy of Science of Brussels. The points especially novel are those of the alkalinity of the digestive tube and the functions of the gizzard, and malpighian tubes, the ; lasti of.which he, with others, regards as exclusively depuratory intheir nature, containing oxalic, uric and phoephatic calculi. Numerous drawings of the crystals of these substances are engraved oa the plafos,; —Some carious observations were lately made by Mr. Joseph Wilcox, in Colorado, respecting the flight of grasshoppers as determined by .the weather. Countless multitudes of the insects , were seen on wing, high in typ .air, one cloudy..*ft»rUfo},proliaj)Ujty*.qt, rajp was bqto a byeftqerpi ps®on* .party the grasshopper^ytugdiMly ed to the ground, in a great dopd, , ; Vlßce ,a •minutes iusqct sgep in tlie ' air, and in a'short time it begp% to rain Soon after Reused I°„raiu, ana the insects took fljglit agAin; but in the course of half ap hour, there lieing no further Special indication of rain, they suddenly plunged to the ground again, ip time to avoid another .shower. The same thing recufreu three limes.