. West coast shells. A familiar description of the marine, fresh water, and land mollusks of United States, found west of the Rocky Mountains ... ver you exam-ine a shell, please notice such points, and try to findout how it is adapted to its surroundings. In thisway, shell gathering becomes something more than amere pastime, for it brings us face to face with thegreat questions of life, of design, and of final with specimens of Chrysodomus dirtts, shownin Fig. 1, I found on Duxbury Reef a great numberof shells quite similar to those of the last were on the moist rock
. West coast shells. A familiar description of the marine, fresh water, and land mollusks of United States, found west of the Rocky Mountains ... ver you exam-ine a shell, please notice such points, and try to findout how it is adapted to its surroundings. In thisway, shell gathering becomes something more than amere pastime, for it brings us face to face with thegreat questions of life, of design, and of final with specimens of Chrysodomus dirtts, shownin Fig. 1, I found on Duxbury Reef a great numberof shells quite similar to those of the last were on the moist rocks, under the heavy growthof sea-weed, and were of almost the same color as thestones to which they were clinging. A view of oneof these shells is shown in Fig. 10. Thename, derived from the angular appear-ance of the whorls, is Monoceros engona-tum, Conr., en-go-na-tum. While theformer species resembled a rolled pebble,this one has sharper corners and looks asif it had been less worn. In other respectsit is very similar to M. lapilloides, andFig. 10. some observers think they are but varietiesof the same species. The remarks on a preceding. 3o A CHANCE FOR STUDY. page, concerning the different kinds of Cerostoma,apply equally well to this genus, and a careful studyof the variations seen in specimens which are foundin different localities and under different conditions ishighly interesting. Accurate observations by any one may prove valu-able, both to the observer and to the cause of sciencein general. There are many things yet to be learnedabout even our most common animals, and no oneneed despair of discovering some new truth. It is a good thing to know the names of the objectswhich we are studying, for that enables us to speak ofthem intelligently and definitely ; but to this knowl-edge of the name we will try to attach all availablefacts which relate in anyway to the nature and habitsof the creature that we are studying. Monoceros hignbre, Sowb., lu-gu-bre, found on thecoast
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectmollusks, bookyear188
