Home |
Search |
Today's Posts |
#71
|
|||
|
|||
We're Back!
Lisa gooped me up with lotsa sunblock, but she got burnt Why didn't you reciprocate? -- katysails s/v Chanteuse Kirie Elite 32 http://katysails.tripod.com "Women and cats will do as they please, and men and dogs should relax and get used to the idea." - Robert A. Heinlein |
#72
|
|||
|
|||
How to pith a toad (non-excretory)
In article , Flying Tadpole
wrote: Peter Wiley wrote: In article , Flying Tadpole wrote: FYI Toads used to be pithed for frankensteinian biology experiments, particularly dealing with hearts and nervous systems. Take one live toad, preferably a cane toad, hold firmly by the back legs so that it doesn't fly across the laboratory on the up swing, swing around one's head then bring it down hard so that the head cracks against the edge of the laboratory bench (not so hard that its head snaps off and flies across the laboratory). Toad should be unconscious or dead after that. Ignore movement. Sever the backbone at the neck then with a probe push up the spinal nerve conduit and pulp the spinal nerve and the cerebellum. Ignore movement while doing so. Dissect out the heart, suspend between supports, flood with saline and apply various stimulants. Watch it beat. dissect out other bits of nerve and muscle, apply electrodes, charge, watch responses. The most revolting thing I was forced to do as an innocent student. Wimp. That was a lot of fun. The real challenge was doing it to lab rats. You had to get the swing and angle just right to crack their heads on the edge of the lab bench. My wife was doing Hons at the time and killing rats wholesale. The real hassle used to come when the rat's scaly tail skin would come off halfway through the downswing. Catching a partially skinned rat in a lab is pretty hilarious but you want to tuck your pants into your socks first. PDW I avoided the psych students. Biochem, not psych. Psych students were almost useless. Skinning rats was a problem in the days I was teaching wildlife courses. Rats had to held very carefully to avoid damaging tails (prone to infection) while marking them (toe-clipping, not very prone to infection but now proscribed). Had to bump of the rats students significantly damaged, but that wasn't very many. I used to enjoy watching students come back in from the early morning mark/release sessions. You could tell which species of rat they'd met by the amount of blood (theirs). Ah, memories of trapping Rattus fuscipes in the national parks north of Sydney and various animals round Smiths Lake. We got a possum in a big trap one night. It wasn't happy. Another time we fooled a kookaburra into swooping on a rubber snake and trying to beat it to death on its tree. My first degree had a major in population ecology. I picked all the courses with good field trips. PDW |
#73
|
|||
|
|||
How to pith a toad (non-excretory)
reminds me of the time one of my students slung my brand new sling
psychrometer too close to a lab bench, smashing both mercury bulbs against the corner of the bench and sending shards of glass and droplets of Hg everywhere. Here is what he said: "ooopsy" Scout "Flying Tadpole" wrote {snip} hold firmly by the back legs so that it doesn't fly across the laboratory on the up swing, swing around one's head then bring it down hard so that the head cracks against the edge of the laboratory bench (not so hard that its head snaps off and flies across the laboratory). {snip} |
#74
|
|||
|
|||
How to pith a toad (non-excretory)
Peter Wiley wrote: In article , Flying Tadpole wrote: Peter Wiley wrote: In article , Flying Tadpole wrote: FYI Toads used to be pithed for frankensteinian biology experiments, particularly dealing with hearts and nervous systems. Take one live toad, preferably a cane toad, hold firmly by the back legs so that it doesn't fly across the laboratory on the up swing, swing around one's head then bring it down hard so that the head cracks against the edge of the laboratory bench (not so hard that its head snaps off and flies across the laboratory). Toad should be unconscious or dead after that. Ignore movement. Sever the backbone at the neck then with a probe push up the spinal nerve conduit and pulp the spinal nerve and the cerebellum. Ignore movement while doing so. Dissect out the heart, suspend between supports, flood with saline and apply various stimulants. Watch it beat. dissect out other bits of nerve and muscle, apply electrodes, charge, watch responses. The most revolting thing I was forced to do as an innocent student. Wimp. That was a lot of fun. The real challenge was doing it to lab rats. You had to get the swing and angle just right to crack their heads on the edge of the lab bench. My wife was doing Hons at the time and killing rats wholesale. The real hassle used to come when the rat's scaly tail skin would come off halfway through the downswing. Catching a partially skinned rat in a lab is pretty hilarious but you want to tuck your pants into your socks first. PDW I avoided the psych students. Biochem, not psych. Psych students were almost useless. Skinning rats was a problem in the days I was teaching wildlife courses. Rats had to held very carefully to avoid damaging tails (prone to infection) while marking them (toe-clipping, not very prone to infection but now proscribed). Had to bump of the rats students significantly damaged, but that wasn't very many. I used to enjoy watching students come back in from the early morning mark/release sessions. You could tell which species of rat they'd met by the amount of blood (theirs). Ah, memories of trapping Rattus fuscipes in the national parks north of Sydney and various animals round Smiths Lake. We got a possum in a big trap one night. It wasn't happy. Another time we fooled a kookaburra into swooping on a rubber snake and trying to beat it to death on its tree. My first degree had a major in population ecology. I picked all the courses with good field trips. Rattus fuscipes was the furry friendly one. It was Rattus lutreolus that was the snakey sod. I didn't get my claws into students until 2nd year, but they had to do a natural resources equivalent to farm practice in first year. I set them keeping tabs on the Roseworthy possums, to get rid of harry Butler ideas (yes, that long ago) and discover that happy furry cuddly native animals were lethal hateful spitting beasts with five razor blades on each hand and every one aimed at you. ALso spent many happy hours marching them through mangrove mud, and teaching them basic power- and row-boat safety (mandatory a.s.asa content) ANd yes, I had students like you. The main issue was not the rubber goods but the bongs. -- Flying Tadpole ------------------------- Faint echoes, sometimes inaudible, of the newsgroup's glorious past are downloadable at http://music.download.com/internetopera |
#75
|
|||
|
|||
How to pith a toad (non-excretory)
Scout wrote: reminds me of the time one of my students slung my brand new sling psychrometer too close to a lab bench, smashing both mercury bulbs against the corner of the bench and sending shards of glass and droplets of Hg everywhere. Here is what he said: "ooopsy" Scout Yes, but did he die later of mercury poisoning? -- Flying Tadpole ------------------------- Faint echoes, sometimes inaudible, of the newsgroup's glorious past are downloadable at http://music.download.com/internetopera |
#76
|
|||
|
|||
We're Back!
Seahag wrote:
Right now I'm working on the exterior teak. I finally got Cetol on the cap rail under the taffrail. AAAACK... Cetol?!?!? What's the point? ... We've finally come up with a do-able plan for the mainmast support rebuild, so that might happen soon. The weather's getting pretty hot and sticky so I don't know how much I can do. We're already at "hot & sticky." Temps hovering around 100 (38 C) on our dock Saturday afternoon. Hordes of mostquitoes, too. What you do about it is get up at 00:dark:30 and work by the pink light of dawn, then take a nap in the air conditioning (or work on some different project down in the nice cool engine room). Gotta make some adjustments to life down South. What's up with mast supports? Are you switching to deck stepped masts? BTW was it Bill who filmed that footage of the Clintons snoozing at Reagan's funeral? I didn't see it but a couple of friends have mentioned it... priceless! Fresh Breezes- Doug King |
#77
|
|||
|
|||
How to pith a toad (non-excretory)
no, but apparently, he did get a bit of it in my tuna sandwich.
Scout "Flying Tadpole" wrote: Yes, but did he die later of mercury poisoning? Scout wrote: reminds me of the time one of my students slung my brand new sling psychrometer too close to a lab bench, smashing both mercury bulbs against the corner of the bench and sending shards of glass and droplets of Hg everywhere. Here is what he said: "ooopsy" Scout |
#78
|
|||
|
|||
How to pith a toad (non-excretory)
Ah. Melted your fillings? (pre-epoxy days)
Scout wrote: no, but apparently, he did get a bit of it in my tuna sandwich. Scout "Flying Tadpole" wrote: Yes, but did he die later of mercury poisoning? Scout wrote: reminds me of the time one of my students slung my brand new sling psychrometer too close to a lab bench, smashing both mercury bulbs against the corner of the bench and sending shards of glass and droplets of Hg everywhere. Here is what he said: "ooopsy" Scout -- Flying Tadpole ------------------------- Faint echoes, sometimes inaudible, of the newsgroup's glorious past are downloadable at http://music.download.com/internetopera |
#79
|
|||
|
|||
How to pith a toad (non-excretory)
I love the eopoxies ~ I go to the Dentist just for the blue-light show!
Scout "Flying Tadpole" wrote in message ... Ah. Melted your fillings? (pre-epoxy days) Scout wrote: no, but apparently, he did get a bit of it in my tuna sandwich. Scout "Flying Tadpole" wrote: Yes, but did he die later of mercury poisoning? Scout wrote: reminds me of the time one of my students slung my brand new sling psychrometer too close to a lab bench, smashing both mercury bulbs against the corner of the bench and sending shards of glass and droplets of Hg everywhere. Here is what he said: "ooopsy" Scout -- Flying Tadpole ------------------------- Faint echoes, sometimes inaudible, of the newsgroup's glorious past are downloadable at http://music.download.com/internetopera |
#80
|
|||
|
|||
How to pith a toad (non-excretory)
Good for wooden boatbulding too!
Scout wrote: I love the eopoxies ~ I go to the Dentist just for the blue-light show! Scout "Flying Tadpole" wrote in message ... Ah. Melted your fillings? (pre-epoxy days) Scout wrote: no, but apparently, he did get a bit of it in my tuna sandwich. Scout "Flying Tadpole" wrote: Yes, but did he die later of mercury poisoning? Scout wrote: reminds me of the time one of my students slung my brand new sling psychrometer too close to a lab bench, smashing both mercury bulbs against the corner of the bench and sending shards of glass and droplets of Hg everywhere. Here is what he said: "ooopsy" Scout -- Flying Tadpole ------------------------- Faint echoes, sometimes inaudible, of the newsgroup's glorious past are downloadable at http://music.download.com/internetopera -- Flying Tadpole ------------------------- Faint echoes, sometimes inaudible, of the newsgroup's glorious past are downloadable at http://music.download.com/internetopera |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
GRETTIR'S SAGA (continued) | ASA | |||
Eastman's guide to exposing the 9-11 mass-murder frameup to justify world-domination to an otherwise isolationist American public | ASA | |||
The Bahamas, Key West and back. | Cruising | |||
back with a problem now | General |