Hope Reports, Volumen5 |
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Términos y frases comunes
A. H. July A. H. Montserrat A. H. Soller abdomen abundant Aculeates antennæ appear Barcelona beetle butterflies captured Castillo del Rey Castle Bellver Catopsilia pyranthe cenea Cerbère chrysippus close cocoon collection colour common conspicuous Danaids Darwin Dixey Entomological exhibited female flowers fore-wing genus Granja HALICTUS hind-wings Hope Department Hospederia to San Hymenoptera Hypolimnas Hypolimnas misippus insects Ixias marianne Ixias pyrene July 14 June La Granja larva larvæ latter Lepidoptera Limnas Limnas chrysippus Little Albufera Lluch Lluchmayor Road Lond Longstaff male mimetic mimic misippus Montserrat Moore moths naturalists observed odour Palma Papilio Pierine Pollensa to Castillo POMPILUS Port Bou Porto Pi Precis present probably Professor Poulton pupa Railway Terminus resemblance rhamni San Geronimo Satyrids scent seen settled Soller Pass species specimens spots Teracolus Terias hecabe Tirumala limniace took Trans trophonius under-side Vanessa wings
Pasajes populares
Página 11 - Systematists will have only to decide (not that this will be easy) whether any form be sufficiently constant and distinct from other forms, to be capable of definition; and if definable, whether the differences be sufficiently important to deserve a specific name. This latter point will become a far more essential consideration than it is at present; for differences, however slight, between any two forms, if not blended by intermediate gradations, are looked at by most naturalists as sufficient to...
Página 21 - It is really laughable to see what different ideas are prominent in various naturalists' minds, when they speak of '' species ; " in some, resemblance is everything and descent of little weight — in some, resemblance seems to go for nothing, and Creation the reigning idea — in some, descent is the key, — in some, sterility an unfailing test, with others it is not worth a farthing. It all comes, I believe, from trying to define the undefinable.
Página 21 - Thus, however regarded, the hypothesis of special creations turns out to be worthless — worthless by its derivation; worthless in its intrinsic incoherence ; worthless as absolutely without evidence ; worthless as not supplying an intellectual need; worthless as not satisfying a moral want. We must therefore consider it as counting for nothing, in opposition to any other hypothesis respecting the origin of organic beings.
Página 25 - But as an honest man, I must tell you that I have come to the heterodox conclusion, that there are no such things as independently created species — that species are only strongly defined varieties.
Página 22 - After describing a set of forms as distinct species, tearing up my MS., and making them one species, tearing that up and making them separate, and then making them one again (which has happened to me), I have gnashed my teeth, cursed species, and asked what sin I had committed to be * In
Página 3 - At night I experienced an attack (for it deserves no less a name) of the Benchuca, a species of Reduri-iu, the great black bug of the Pampas. It is most disgusting to feel soft wingless insects, about an inch long, crawling over one's body. Before sucking they are quite thin, but afterwards they become round and bloated with blood, and in this state are easily crushed.
Página 11 - British brambles are true species will cease. Systematists will have only to decide (not that this will be easy) whether any form be sufficiently constant and distinct from other forms, to be capable of definition ; and if definable, whether the differences be sufficiently important to deserve a specific name.
Página 11 - Systematists will be able to pursue their labours as at present; but they will not be incessantly haunted by the shadowy doubt whether this or that form be a true species.
Página 35 - I am surprised that no one has hitherto advanced this demonstrative case of neuter insects, against the well-known doctrine of inherited habit, as advanced by Lamarck.
Página 27 - Nearly all the means of defence against other enemies are such as tend to prevent the larva from being seen or touched, rarely such as to be of any avail when actually attacked. There may be various changes in the mode of defence, but the object is always the same, — to leave the larva untouched, a touch being practically fatal.