Stephenson, acts as an erector, and is very valuable for dissections. [Please select]
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The erector muscles of the spine (sacrolumbalis, longissimus dorsi and multifidus spinæ) weighed fully 16 lbs. [Please select]
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A low power--a three or two-inch glass--or a one-inch, reduced by employing the erector--is the most convenient for examining the whole creature, but higher powers are necessary to make out its minute structure. [Please select]
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