The Scientific Monthly, Tom 12James McKeen Cattell American Association for the Advancement of Science, 1920 |
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Strona 201
... pigmented , the nucleus is small , and the nucleolus much shrunken or absent . Both sections taken from the first cervical ganglion , X 250 diameters ; 3 , nerve cells from the antennary ganglion of a honey - bee . just ' emerged in the ...
... pigmented , the nucleus is small , and the nucleolus much shrunken or absent . Both sections taken from the first cervical ganglion , X 250 diameters ; 3 , nerve cells from the antennary ganglion of a honey - bee . just ' emerged in the ...
Strona 215
... pigment granules in the hair shaft , to which the color of the hair is primarily due , may also be used as determinative criteria for identification , when considered either alone or in conjunction with the other com- positional units ...
... pigment granules in the hair shaft , to which the color of the hair is primarily due , may also be used as determinative criteria for identification , when considered either alone or in conjunction with the other com- positional units ...
Strona 216
... pigment granules in cortex . FIG . 2. - Fur hairs from the Ameri- can otter ( above ) , and the coypu , or " nutria " ( below ) , seen in the comparison ocular . The scale in the center is that of the micrometer eye- piece . Each ...
... pigment granules in cortex . FIG . 2. - Fur hairs from the Ameri- can otter ( above ) , and the coypu , or " nutria " ( below ) , seen in the comparison ocular . The scale in the center is that of the micrometer eye- piece . Each ...
Strona 217
... pigment masses are in most cases characteristic of the species possessing them , and can be used as valua- ble aids in identifying hair samples . Gray hair , produced by these lenticular medullary pigment masses , is extremely common ...
... pigment masses are in most cases characteristic of the species possessing them , and can be used as valua- ble aids in identifying hair samples . Gray hair , produced by these lenticular medullary pigment masses , is extremely common ...
Strona 221
... pigment masses ( Fig . 17 ) , the brown medullary masses ( Fig . 18 to 22 ) , and the brown cortical granules ( Figs . 19 to 22 ) . A somewhat similar color change can be followed along the length of the protective hair of the muskrat ...
... pigment masses ( Fig . 17 ) , the brown medullary masses ( Fig . 18 to 22 ) , and the brown cortical granules ( Figs . 19 to 22 ) . A somewhat similar color change can be followed along the length of the protective hair of the muskrat ...
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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...