The Scientific Monthly, Tom 12James McKeen Cattell American Association for the Advancement of Science, 1921 |
Z wnętrza książki
Wyniki 1 - 5 z 46
Strona 7
... practical comparisons in study of world evolution , we appear to have one of the most important sources of information in the history of our own planet . For the universe in the large we can prove little more than that there is shown a ...
... practical comparisons in study of world evolution , we appear to have one of the most important sources of information in the history of our own planet . For the universe in the large we can prove little more than that there is shown a ...
Strona 18
... practical , equable and concerted program for the replacement of forests adequate in area and quality for the future needs of the nation . National , regional and local associations of lumbermen and large users of forest products such ...
... practical , equable and concerted program for the replacement of forests adequate in area and quality for the future needs of the nation . National , regional and local associations of lumbermen and large users of forest products such ...
Strona 29
... permanent timber supply must be adequate and practical to produce the needed results , just to all interests concerned and acceptable to the majority . 2nd : There is urgent need for co - operation RE - SHAPING OUR FOREST POLICY 29.
... permanent timber supply must be adequate and practical to produce the needed results , just to all interests concerned and acceptable to the majority . 2nd : There is urgent need for co - operation RE - SHAPING OUR FOREST POLICY 29.
Strona 33
... practical application . II . FEDERAL AND STATE LEGISLATION REQUIRED A. FEDERAL LEGISLATION 1st . For the extension of national forests . ( a ) Authority to exchange national forest land , stump- age and timber certificates for private ...
... practical application . II . FEDERAL AND STATE LEGISLATION REQUIRED A. FEDERAL LEGISLATION 1st . For the extension of national forests . ( a ) Authority to exchange national forest land , stump- age and timber certificates for private ...
Strona 51
... practical work on the diseases which are transmitted by soil pollution is to be carried on . Before such train- ing can be given we must perfect methods of diagnosis , and investi- gate the factors involved in prevention . The attention ...
... practical work on the diseases which are transmitted by soil pollution is to be carried on . Before such train- ing can be given we must perfect methods of diagnosis , and investi- gate the factors involved in prevention . The attention ...
Inne wydania - Wyświetl wszystko
Kluczowe wyrazy i wyrażenia
ability altitude American animals Aristotle average biological bird body cent century cicadas climate color curve Darwin death discovery divisors early earth ectoderm eggs electric Empedocles evolution expectation experiment experimental fact factors feet figures force of mortality forest function fundamental G. H. HARDY geological geometry germ cells germ layer given grade health resorts illustrated important individual interest investigation knowledge known laboratory lake laws living mathematical matter ment mental method modern mortality mountains National Natural Selection nature Negroes observation organs origin parthenogenesis Passenger Pigeon perfect number period phenomena physical pigment plants plate possible present problems Professor progress protozoa pupae RALPH ALLEN SAMPSON regarded rocks salmon scientific senescence SOCKEYE SALMON species spermatozoon stream summer tests theory tion tissues tree University whole Wild Pigeon winter
Popularne fragmenty
Strona 148 - So the Deacon inquired of the village folk Where he could find the strongest oak, That couldn't be split nor bent nor broke, — That was for spokes and floor and sills; He sent for lancewood to make the thills; The crossbars were ash, from the straightest trees, The panels of white-wood, that cuts like cheese, But lasts like iron for things like these; The hubs of logs from the "Settler's Ellum...
Strona 138 - 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 149 - V 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 149 - 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!
Strona 259 - I began to think whether there might not be a motion, as it were, in a circle.
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 96 - Council for Professional Development is composed of representatives of the American Society of Civil Engineers, American Institute of Mining and Metallurgical Engineers, American Society of Mechanical Engineers, American Institute of Electrical Engineers...
Strona 144 - 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 145 - 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 143 - 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...