12 



SCIENCE. 



[Vol. XXII. No. 544 



Moreover, when we remember what unexplainable eases of in- 

 heritance occur, sucli as special movements during sleep, we 

 must admit that eveu the tendency in a snake to incubate its 

 eggs may also be transmitted, the more so as we have an indis- 

 putable inheritance of the s:^me nature daily shown ui in the 

 case of birds, for the tendency of the parents to incubate their 

 young is in all cases inherited by the offspring. 



Clement Fezandie. 



686 Lexington Avenue, New York. 



Another Ancient Argillite Quarry Near Trenton, 



On the left bank of Neshaming " Creek,"' Bucks County, Penn- 

 sylvania, about three-fourths of a mile above the mouth of 

 Labaska or Mill Creek, I discovered at the base of the cliffs of 

 metamorphosed slate that there overhang the stream, on June 23, 

 another ancient work-shop where blocks of argillite, lying in situ, 

 have been chipped into " turtle-backs." 



A layer of chips, hammer-stones, and the now familiar rude 

 leaf-shaped forms is laid bare for several hundred yards vrhere 

 the stream has worn away the margin. The blocks of ivorkable 

 stone in various instances show peckings upon their sides, as do 

 similar specimens at Point Pleasant, inferably made by the ancient 

 workmen to split them with the grain. 



No search has yet been made for diggings and refuse-heaps 

 higher up the slope, nor has^soavation been made into the ex- 

 posed layers; but thus far the slory of the workings on Gaddis' 

 Run. near Point Pleasant (Bucks County, Pennsylvania), discov- 

 ered on May 32, seems to be repeated, though on a smaller scale. 

 There we were twenty-five miles from Trenton ; here we are but 

 gfteen. H. C. Merger. 



shallow gutter, iii which there is a considerable accumulation of 

 the winged seeds from a neighboring tree. These were standing 

 in shallow water, left there by the recent rains. 



I observed a robin alight on the roof, and noticed that she 

 picket from the gutter a bunch of those seeds, which she held in 

 her bill while she seemed to be preparing to fly away. 



Presently, apparently dissatisfied with what she had picked up, 

 she dropped the seeds, and moving to a place where they were 

 lying in a thicker bed, she gathered a much larger mass of them, 

 about as many as her bill would hold together. After gathering 

 them and satisfying herself that she had enough, she deliberately 

 dipped the mass into the water and flew away with it to a dis- 

 tant tree. Perhaps some of your reailers may suggest a truer 

 explanation; but to me she seemed to be carrying a supply of 

 water to her brood in what was no inadequate substitute for a 

 sponge. Francis Philip Nash. 



Geneva, N. T., June 28. 



BOOK-REVIEWS. 



Ames, Iowa, 



Do Nestlings Drink. 

 This question suggested itself to my mind very lately, when I 

 observed the following, and to me, entirely new fact : 



A piazza-roof, on which my windows open, is provided with a 



Logarithmic Tables. By Professor G. W. Jones. 

 the Author. 



The title of this book does not exactly describe its contents. 

 The strictly logarithmic tables are only about one-half of those 

 given. The arrangement of the tables, of which there are eigh- 

 teen, has been made to meet the wants of those who desire to 

 have, in a handy form, tables to be used in computations covering 

 a wide range. Table I. is a four-place, of numbers from 1 to 

 1.000, followed by one of the same accuracy giving the six prin- 

 cipal trigonometric functions, and of the lengths of arcs in radians. 

 The first five degrees of the quadrant are given to each five 

 minutes, the following to each ten minutes, with differences for 

 single minutes. A table giving the squares, cubes, square-roots, 

 cube-roots, and reciprocals of the numbers 1, 2, 3, 99 is also given. 

 Table III. is a six-place table of numbers, the side numbering 

 being carried to only three figures instead of four, as is usual in 



CALENDAR OF SOCIETIES. 

 Agassiz Scientific Society, Corvallis, Ore. 



June 14. — Dr. Pernot, Aphasia. 



Reading Matter Notices. 



Ripans Tabules cure hives. 

 Ripans Tabules cure dyspepsia. 



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