. Geo. H. Pierce, Philadelphia. The Holman Siphon Slide consists of a slipof thick Plate Glass, three inches long by one inchwide, havino; a cavity of sufficient size to contain asmall tadpole, lizard, portion of a plant, etc., etc,;to each end of the cavity small rubber tubes are at-tached, one of which connects with a bottle or otherreservoir of water, the other serving as an outlet forthe water after it has passed through the cavity; thuskeeping up a constant current of fresh water, andftUowing the enclosed living ani
. Geo. H. Pierce, Philadelphia. The Holman Siphon Slide consists of a slipof thick Plate Glass, three inches long by one inchwide, havino; a cavity of sufficient size to contain asmall tadpole, lizard, portion of a plant, etc., etc,;to each end of the cavity small rubber tubes are at-tached, one of which connects with a bottle or otherreservoir of water, the other serving as an outlet forthe water after it has passed through the cavity; thuskeeping up a constant current of fresh water, andftUowing the enclosed living animal, etc., to be kept in position, without injury orinconvenience for any length of time. For use with the Microscopic Attachment to the Magic Lantern m projecting images of living objects upon the screen, it is invaluable $ It is not necessary to have any special form of bottle for Keservoirs—anyvessels capable of holding water, will answer. No. 683. FOR THE MICROSCOPIC ATTACHMENT. Consisting of two Prisms of Ic<-1 md Spar, properly mounted, one of which isplaced between the object and the
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectproject, bookyear1888
