Originally posted by J M Clegg
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I didn't think you were advocating cryogenics either, and I'm well aware that cooling a spider is mentioned in many books. As MarkP pointed out in his earlier post though, a spider is essentially hydraulic, and a drop in hemolymph pressure can be fatal, but as you say, if the spider is dying anyway, then what have you got to lose.
I'm not entirely convinced that melting the petroleum jelly is more effective than smearing it on the wound, or using superglue, or any of the other methods I've read about, and if the spider is immobile, then you don't need to drip it onto the wound. Why not apply it directly with the cotton bud?
I'm not knocking your technique even if it sounds as if I am, and if it works as well as you say it does then that's fantastic. Any spider saved is a win in my book. Discussion is healthy though.
Also if you re-read my earlier post, what I said was that I wouldn't consider melting vaseline with a lighter, not that I wouldn't consider using your technique

You are also mistaken if you think vaseline is used in boxing to stem blood flow. When a boxer is cut, the 'cut man' applies a swab soaked in adrenaline hydrochloride (an epinephrine solution, or a proprietry coagulant) directly to the cut. This constricts the blood vessels, and is what actually reduces or stops the bleeding. Vaseline is applied afterwards so that the opponent's gloves slip on the skin rather than tear or snag it and reopen or worsen the cut.
I agree entirely with you that sharing information is essential. How else can we learn from each other?
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