Prenatal virilization. In the prenatal period, virilization refers to closure of the perineum, thinning and wrinkling (rugation) of the scrotum, growth of the phallus, and closure of the urethral groove to the tip of the penis. In this context, masculinization is synonymous with virilization.
[QUOTE=Greatnorth;481595]Well, usually I wait till there's a good 3-4 foot of snow because you don't want your skis to touch the dirt/ground or whatever isn't snow. Snowmobiles are made to operate on snow and that's all they should do. Really 3-4 feet of snow until you go snowmobiling??? They open the trails around here when roughly 6-7 inches of snow are on the ground. Never had a problem running my sleds in 6 inches of snow or more.
If you have a fan-cooled snowmobile, then only cold temperatures are required, snow is not (though it's still snowmobiling, and wearbars, soon followed by the skis themselves, as quickly eroded from long-term off-snow driving). 4 inches of snow is the legal requirement for snow in Vermont. A liquid cooled snowmobile will operate as long as snow (or even water) hits the exchangers frequently. Basically, as long as the ground is covered, the snowmobile will be cooled.