The Scientific Monthly, Tom 12James McKeen Cattell American Association for the Advancement of Science, 1920 |
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Strona 157
... pupa of the flea was attacked and fed upon by a minute parasite . Jonathan Swift having got hold of this fact made ... pupae of the Aphides , that the real eggs of Aphides were far smaller and underwent development into larvae . W. B. ...
... pupa of the flea was attacked and fed upon by a minute parasite . Jonathan Swift having got hold of this fact made ... pupae of the Aphides , that the real eggs of Aphides were far smaller and underwent development into larvae . W. B. ...
Strona 310
... pupal cases were collected at the foot of trees , smaller than the seldom found cases of the non - periodical cicada , or harvest fly , Cicada tibicem . But in 1919 the holes in the ground were all extended up almost to the surface or ...
... pupal cases were collected at the foot of trees , smaller than the seldom found cases of the non - periodical cicada , or harvest fly , Cicada tibicem . But in 1919 the holes in the ground were all extended up almost to the surface or ...
Strona 312
... pupae kept in jars of earth in 1902 showed that the peculiar face of the insect was used as a hod to bring up to the surface of the ground the small pellets of mud collected below and laboriously carried to the surface . As the tunnel ...
... pupae kept in jars of earth in 1902 showed that the peculiar face of the insect was used as a hod to bring up to the surface of the ground the small pellets of mud collected below and laboriously carried to the surface . As the tunnel ...
Strona 313
... pupae , as if all of one mind march steadily toward the tree trunk at the center of their entire area of emergence . Arrived at the tree or other upright they do not hesitate to climb up it with slow but steady progress often for many ...
... pupae , as if all of one mind march steadily toward the tree trunk at the center of their entire area of emergence . Arrived at the tree or other upright they do not hesitate to climb up it with slow but steady progress often for many ...
Strona 315
... pupae from area 15 feet radius around one tree during thirteen days , May 22 to June 3 inclusive ; 65 , 240 , 400 , 338 , 910 , 784 , 551 , 738 , 561 , 234 , 118 , 39 , 5 . That is , the first day saw only 65 emerge , but the second day ...
... pupae from area 15 feet radius around one tree during thirteen days , May 22 to June 3 inclusive ; 65 , 240 , 400 , 338 , 910 , 784 , 551 , 738 , 561 , 234 , 118 , 39 , 5 . That is , the first day saw only 65 emerge , but the second day ...
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Strona 151 - At half past nine by the meet'n'-house clock,— Just the hour of the Earthquake shock! —What do you think the parson found, When he got up and stared around? The poor old chaise in a heap or mound, As if it had been to the mill and ground! You see, of course, if you're not a dunce, How it went to pieces all at once,— All at once, and nothing first,— Just as bubbles do when they burst.
Strona 151 - n' all the kentry raoun'; It should be so built that it couldn' break daown: — "Fur," said the Deacon, "'t's mighty plain Thut the weakes' place mus' Stan' the strain; 'N' the way t' fix it, uz I maintain, Is only jest T' make that place uz strong uz the rest.
Strona 140 - Spanish sailors with bearded lips, And the beauty and mystery of the ships, And the magic of the sea. And the voice of that wayward song Is singing and saying still: 'A boy's will is the wind's will, And the thoughts of youth are long, long thoughts.
Strona 280 - As many more individuals of each species are born than can possibly survive; and as, consequently, there is a frequently recurring struggle for existence, it follows that any being, if it vary however slightly in any manner profitable to itself, under the complex and sometimes varying conditions of life, will have a better chance of surviving, and thus be naturally selected. From the strong principle of inheritance, any selected variety will tend to propagate its new and modified form.
Strona 259 - ... ruptured, through the excessive charge of blood, unless the blood should somehow find its way from the arteries into the veins, and so return to the right side of the heart ; I began to think whether there might not be A MOTION, AS IT WERE, IN A CIRCLE.
Strona 146 - Ef you're arter folks o' gumption, You've a darned long row to hoe. Take them editors thet's crowin' Like a cockerel three months old, — Don't ketch any on 'em goin', Though they be so blasted bold; Aint they a prime lot o' fellers? 'Fore they think on't guess they'l sprout (Like a peach thet's got the yellers), With the meanness bustin' out. Wai, go 'long to help 'em stealin' Bigger pens to cram with slaves, Help the men thet's oilers dealin
Strona 147 - Then seems to come a hitch, — things lag behind, Till some fine mornin' Spring makes up her mind, An' ez, when snow-swelled rivers cresh their dams Heaped-up with ice thet dovetails in an' jams, A leak comes spirtin' thru some pin-hole cleft, Grows stronger, fercer, tears out right an...
Strona 145 - When Cuba's weeds have quite forgot The power of suction to resist, And claret-bottles harbor not Such dimples as would hold your fist, — When publishers no longer steal, And pay for what they stole before, — When the first locomotive's wheel Rolls through the Hoosac tunnel's bore ; — Till then let Gumming blaze away, And Miller's saints blow up the globe ; But when you see that blessed day, Then order your ascension robe...
Strona 142 - And further, by these, my son, be admonished : of making many books there is no end ; and much study is a weariness of the flesh.
Strona 259 - ... not finding it possible that this could be supplied by the juices of the ingested aliment without the veins on the one hand becoming drained, and the arteries on the other...